Annotation of embedaddon/dnsmasq/CHANGELOG.archive, revision 1.1.1.1

1.1       misho       1: release 0.4 - initial public release
                      2: 
                      3: release 0.5 - added caching, removed compiler warning on linux PPC
                      4: 
                      5: release 0.6 - TCP handling: close socket and return to connect state if we 
                      6:               can't read the first byte. This corrects a problem seen very 
                      7:               occasionally where dnsmasq would loop using all available CPU.
                      8: 
                      9:              Added a patch from Cris Bailiff <c.bailiff@e-secure.com.au>
                     10:              to set SO_REUSEADDR on the tcp socket which stops problems when
                     11:               dnsmasq is restarted and old connections still exist.
                     12: 
                     13:              Stopped claiming in doc.html that smail is the default Debian
                     14:              mailer, since it isn't any longer. (Pointed out by
                     15:              David Karlin <dkarlin@coloradomtn.edu>)
                     16: 
                     17: release 0.7   Create a pidfile at /var/run/dnsmasq.pid
                     18: 
                     19:              Extensive armouring against "poison packets" courtesy of
                     20:               Thomas Moestl <tmoestl@gmx.net>
                     21: 
                     22:              Set sockaddr.sa_family on outgoing address, patch from
                     23:              David Symonds <xoxus@usa.net>
                     24: 
                     25:               Patch to clear cache on SIGHUP 
                     26:              from Jason L. Wagner <nialscorva@yahoo.com> 
                     27: 
                     28:              Fix bad bug resulting from not initialising value-result  
                     29:              address-length parameter to recvfrom() and accept() - it
                     30:              worked by luck before!
                     31: 
                     32: release 0.95  Major rewrite: remove calls to gethostbyname() and talk
                     33:               directly to the upstream server(s) instead.
                     34:               This has many advantages.
                     35:               (1) Dnsmasq no longer blocks during long lookups.
                     36:               (2) All query types are handled now, (eg MX) not just internet
                     37:                   address queries. Addresses are cached, all other
                     38:                   queries are forwarded directly.
                     39:               (3) Time-to-live data from upstream server is read and
                     40:                   used by dnsmasq to purge entries from the cache.
                     41:               (4) /etc/hosts is still read and its contents served (unless 
                     42:                  the -h option is given).
                     43:               (5) Dnsmasq can get its upstream servers from
                     44:                   a file other than /etc/resolv.conf (-r option) this allows
                     45:                   dnsmasq to serve names to the machine it is running
                     46:                   on (put nameserver 127.0.0.1 in /etc/resolv.conf and
                     47:                   give dnsmasq the option -r /etc/resolv.dnsmasq)
                     48:               (6) Dnsmasq will re-read its servers if the
                     49:                   modification time of resolv.conf changes. Along with
                     50:                   4 above this allows nameservers to be set
                     51:                  automatically by ppp or dhcp.  
                     52: 
                     53:               A really clever NAT-like technique allows the daemon to have lots
                     54:               of queries in progress, but still remain very lightweight.
                     55:              Dnsmasq has a small footprint and normally doesn't allocate
                     56:               any more memory after start-up. The NAT-like forwarding was
                     57:               inspired by a suggestion from Eli Chen <eli@routefree.com>
                     58: 
                     59: release 0.96  Fixed embarrasing thinko in cache linked-list code.
                     60:                              
                     61: release 0.98  Some enhancements and bug-fixes. 
                     62:               Thanks to "Denis Carre" <denis.carre@laposte.net> and Martin 
                     63:               Otte <otte@essc.psu.edu> 
                     64:               
                     65:              (1) Dnsmasq now always sets the IP source address
                     66:                   of its replies correctly. Older versions would not always
                     67:                   do this on multi-homed and IP aliased hosts, which violates 
                     68:                   the RFC.
                     69:               (2) Dnsmasq no longer crashes if a server loop is created
                     70:                  (ie dnsmasq is told to use itself as an upstream server.)
                     71:                   Now it just logs the problem and doesn't use the bad 
                     72:                   server address.
                     73:               (3) Dnsmasq should now forward (but not cache) inverse queries 
                     74:                   and server status queries; this feature has not been tested.
                     75:               (4) Don't write the pid file when in non-daemon mode.
                     76:              (5) Create the pid file mode 644, rather then 666 (!).
                     77:               (6) Generate queries to upstream nameservers with unpredictable
                     78:                   ids, to thwart DNS spoofers.
                     79:               (7) Dnsmasq no longer forwards queries when the 
                     80:                  "recursion desired" bit is not set in the header.
                     81:              (8) Fixed getopt code to work on compliers with unsigned char.
                     82:               
                     83: release 0.991 Added -b flag: when set causes dnsmasq to always answer
                     84:              reverse queries on the RFC 1918 private IP space itself and
                     85:               never forward them to an upstream server. If the name is not in
                     86:              /etc/hosts, dnsmasq replies with the dotted-quad address.
                     87:               
                     88:               Fixed a bug which stopped dnsmasq working on a box with
                     89:               two or more interfaces with the same IP address. 
                     90: 
                     91:               Fixed cacheing of CNAMEs. Previously, a CNAME which pointed
                     92:               to  a name with many A records would not have all the addresses
                     93:               returned when being answered from the cache.
                     94: 
                     95:              Thanks to "Steve Hardy" <s.a.hardy@connectux.com> for his input 
                     96:               on these fixes.
                     97: 
                     98:               Fixed race which could cause dnsmasq to miss the second of
                     99:               two closely-spaced updates of resolv.conf (Thanks to Eli Chen
                    100:               for pointing this out.)
                    101: 
                    102:              Fixed a bug which could cause dnsmasq to fail to cache some
                    103:               dns names.
                    104: 
                    105: release 0.992 Small change to memory allocation so that names in /etc/hosts
                    106:               don't use cache slots. Also make "-c 0" flag meaningfully 
                    107:               disable caching completely.                            
                    108: 
                    109: release 0.993 Return only the first (canonical) name from an entry in
                    110:              /etc/hosts as reply to reverse query.
                    111:               
                    112:               Handle wildcard queries for names/addresses in /etc/hosts
                    113:              this is mainly to allow reverse lookups by dig to succeed.
                    114:              (Bug reported by Simon J. Rowe" <srowe@mose.org.uk>)  
                    115:               
                    116:               Subtle change to the logic which selects which of multiple
                    117:              upstream servers we send queries to. This fixes a problem 
                    118:               where dnsmasq continuously sends queries to a server which
                    119:              is returning error codes and ignores one which is working.
                    120:               
                    121: release 0.994 Fixed bug which broke lookup of names in /etc/hosts
                    122:               which have upper-case letters in them. Thanks for Joao Clemente
                    123:               for spotting that one. 
                    124: 
                    125:              Output cache statistics on receipt of SIGUSR1. These go
                    126:               to syslog except in debug (-d) mode, when a complete cache
                    127:              dump goes to stdout. Suggestion from Joao Clemente, code
                    128:               based in John Volpe's.
                    129:               
                    130:              Accept GNU long options on the command line. Code from 
                    131:              John Volpe for this. 
                    132: 
                    133:               Split source code into multiple files and produced 
                    134:              a proper makefile. 
                    135:               
                    136:               Included code from John Volpe to parse dhcp.leases file
                    137:               written by ISC dhcpd. The hostnames in the leases file are
                    138:               added to the cache and updated as dhcpd updates the 
                    139:               leases file. The code has been heavily re-worked by me,
                    140:               so any bugs are probably mine.
                    141: 
                    142: release 0.995 Small tidy-ups to signal handling and cache code.
                    143: 
                    144: release 0.996 Added negative caching: If dnsmasq gets a "no such domain" reply
                    145:               from an upstream nameserver, it will cache that information
                    146:               for a time specified by the SOA RR in the reply. See RFC 2308
                    147:               for details. This is useful with  resolver libraries
                    148:               which append assorted suffices to non-FQDN in an attempt to 
                    149:               resolve them, causing useless cache misses.
                    150: 
                    151:               Added -i flag, which restricts dnsmasq to offering name service
                    152:               only on specified interfaces.
                    153: 
                    154: release 0.997 Deleted INSTALL script and added "install" target to makefile.
                    155: 
                    156:               Stopped distributing binaries in the tarball to avoid 
                    157:               libc version clashes.
                    158: 
                    159:               Fixed  interface detection code to
                    160:               remove spurious startup errors in rare circumstances.
                    161: 
                    162:               Dnsmasq now changes its uid, irrevocably, to nobody after
                    163:               startup for security reasons. Thanks to Peter Bailey for
                    164:               this patch.
                    165: 
                    166:              Cope with infinite DHCP leases. Patch thanks to 
                    167:              Yaacov Akiba Slama.
                    168: 
                    169:              Added rpm control files to .tar.gz distribution. Thanks to
                    170:               Peter Baldwin at ClarkConnect for those.
                    171: 
                    172:               Improved startup script for rpms. Thanks to Yaacov Akiba Slama.
                    173: 
                    174: release 1.0   Stable release: dnsmasq is now considered feature-complete
                    175:               and stable.
                    176:               
                    177: release 1.1   Added --user argument to allow user to change to
                    178:               a different userid.
                    179: 
                    180:               Added --mx-target argument to allow mail to be delivered
                    181:               away from the gateway machine running dnsmasq.
                    182: 
                    183:               Fixed highly  obscure bug with wildcard queries for
                    184:               DHCP lease derived names.
                    185: 
                    186:               Moved manpage from section 1 to section 8.
                    187: 
                    188:               Added --no-poll option.
                    189:               Added Suse-rpm support.
                    190:               Thanks to Joerg Mayer for the last two.
                    191: 
                    192: release 1.2   Added IPv6 DNS record support. AAAA records are cached
                    193:               and read from /etc/hosts. Reverse-lookups in the
                    194:              ip6.int and ip6.arpa domains are suppored. Dnsmasq can
                    195:               talk to upstream servers via IPv6 if it finds IP6 addresses
                    196:               in /etc/resolv.conf and it offers DNS service automatically
                    197:               if IPv6 support is present in the kernel.
                    198: 
                    199:               Extended negative caching to NODATA replies.
                    200: 
                    201:               Re-vamped CNAME processing to cope with RFC 2317's use of
                    202:               CNAMES to PTR RRs in CIDR.
                    203: 
                    204:               Added config.h and a couple of symbols to aid
                    205:               compilation on non-linux systems.
                    206: 
                    207: release 1.3   Some versions of the Linux kernel return EINVAL rather
                    208:               then ENPROTONOSUPPORT when IPv6 is not available, 
                    209:               causing dnsmasq to bomb out. This release fixes that.
                    210:               Thanks to Steve Davis for pointing this one out.
                    211: 
                    212:               Trivial change to startup logic so that dnsmasq logs
                    213:               its stuff and reads config files straight away on
                    214:               starting, rather than after the first query - principle 
                    215:               of least surprise applies here.     
                    216: 
                    217: release 1.4   Fix a bug with DHPC lease parsing which broke in
                    218:               non-UTC timezones. Thanks to Mark Wormgoor for
                    219:               spotting and diagnosing this. Fixed versions in
                    220:               the .spec files this time. Fixed bug in Suse startup
                    221:               script. Thanks to Didi Niklaus for pointing this out.
                    222: 
                    223: release 1.5   Added --filterwin2k option which stops dnsmasq from forwarding
                    224:              "spam" queries from win2k boxes. This is useful to stop spurious
                    225:               connections over dial-on-demand links. Thanks to Steve Hardy 
                    226:               for this code.
                    227: 
                    228:               Clear "truncated" bit in replies we return from upstream. This
                    229:               stops resolvers from switching to TCP, which is pointless since
                    230:               dnsmasq doesn't support TCP. This should solve problems
                    231:               in resolving hotmail.com domains.
                    232: 
                    233:               Don't include getopt.h when Gnu-long-options are disabled -
                    234:               hopefully this will allow compilation on FreeBSD.
                    235: 
                    236:              Added the --listen-address and --pid-file flags.
                    237: 
                    238:               Fixed a bug which caused old entries in the DHCP leases file
                    239:               to be used in preference to current ones under certain
                    240:               circumstances.
                    241: 
                    242: release 1.6   If a machine gets named via DHCP and the DHCP name doesn't have
                    243:               a domain part and domain suffix is set using the -s flag, then
                    244:               that machine has two names with the same address, with and 
                    245:               without the domain suffix. When doing a _reverse_ lookup to
                    246:               get the name, the "without suffix" name used to be returned,
                    247:               now the "with suffix" one gets returned instead. This change
                    248:              suggested by Arnold Schulz.
                    249: 
                    250:               Fixed assorted typos in the documentation. Thanks 
                    251:               to David Kimdon.
                    252: 
                    253:               Subtle rearrangement to the downloadable tarball, and stopped
                    254:               distributing .debs, since dnsmasq is now an official Debian
                    255:               package.
                    256: 
                    257: release 1.7   Fix a problem with cache not clearing properly
                    258:               on receipt of SIGHUP. Bug spotted by Sat Deshpande.
                    259: 
                    260:               In group-id changing code:
                    261:              1) Drop supplimentary groups.
                    262:               2) Change gid before dropping root (patch from Soewono Effendi.)
                    263:               3) Change group to "dip" if it exists, to allow access
                    264:                  to /etc/ppp/resolv.conf (suggestion from Jorg Sommer.)
                    265:               Update docs to reflect above changes.
                    266: 
                    267:               Other documentation changes from David Miller.
                    268:               Added suggested script fragment for dhcpcd.exe.
                    269: 
                    270: release 1.8   Fix unsafe use of tolower() macro - allows linking against 
                    271:               ulibc. (Patches from Soewono Effendi and Bjorn Andersson.)
                    272: 
                    273:               Fix typo in usage string.
                    274: 
                    275:              Added advice about RedHat PPP configuration to
                    276:               documentation. (Thanks to C. Lee Taylor.)
                    277: 
                    278:              Patches to fix problems on BSD systems from Marc Huber
                    279:               and Can Erkin Acar. These add the options
                    280:               HAVE_ARC4RANDOM and HAVE_SOCKADDR_SA_LEN to config.h.
                    281:              Elaborated config.h - should really use autoconf.
                    282: 
                    283:              Fix time-to-live calculation when chasing CNAMEs.
                    284: 
                    285:              Fix use-after-free and missing initialisation bugs in
                    286:               the cache code. (Thanks to Marc Huber.)
                    287: 
                    288:               Builds on Solaris 9. (Thanks to Marc Huber.)           
                    289: 
                    290: release 1.9   Fixes to rpm .spec files.
                    291: 
                    292:               Don't put expired DHCP entries into the cache only to 
                    293:              throw them away again.
                    294: 
                    295:               Put dnsmasq on a severe memory diet: this reduces both
                    296:               the amount of heap space used and the stack size
                    297:               required. The difference is not really visible with
                    298:               bloated libcs like glibc, but should dramatically reduce
                    299:               memory requirements when linked against ulibc for use on
                    300:               embeded routers, and that's the point really. Thanks to
                    301:               Matthew Natalier for prompting this.   
                    302: 
                    303:              Changed debug mode (-d) so that all logging appears on
                    304:               stderr as well as going to syslogd. 
                    305: 
                    306:              Added HAVE_IPV6 config symbol to allow compilation
                    307:               against a libc which doesn't have IPv6 support.
                    308: 
                    309:              Added a facility to log all queries, enabled with -q flag.
                    310: 
                    311:              Fixed packet size checking bug in address extraction code.
                    312: 
                    313:              Halved default cache size - 300 was way OTT in typical use.
                    314: 
                    315:              Added self-MX function, enabled by -e flag. Thanks to
                    316:               Lyonel Vincent for the patch.
                    317: 
                    318:              Added HAVE_FORK config symbol and stuff to support
                    319:               uClinux. Thanks to Matthew Natalier for uClinux stuff. 
                    320: 
                    321: release 1.10  Log warnings if resolv.conf or dhcp.leases are not
                    322:               accessable for any reason, as suggested by Hinrich Eilts.
                    323: 
                    324:              Fixed wrong address printing in error message about
                    325:              no interface with address.
                    326: 
                    327:              Updated docs and split installation instuctions into setup.html.
                    328: 
                    329:              Fix bug in CNAME chasing code: One CNAME pointing
                    330:              to many A records would lose A records after the 
                    331:              first. This bug was introduced in version 1.9.
                    332: 
                    333:              Log startup failures at level Critical as well as 
                    334:              printing them to standard error.
                    335:              Exit with return code 1 when given bad options.
                    336: 
                    337:              Cleaned up code for no-cache operation.
                    338: 
                    339:               Added -o option which forces dnsmasq to use to
                    340:               upstream servers in the order they appear in /etc/resolv.conf.
                    341: 
                    342:               Added upstream server use logging.
                    343: 
                    344:               Log full cache dump on receipt of SIGUSR1 when query 
                    345:               logging is enabled (-q switch).
                    346: 
                    347:              Added -S option to directly specify upstream servers and
                    348:               added ability to direct queries for specific domains to
                    349:               specfic servers. Suggested by Jens Vonderheide.
                    350: 
                    351:              Upgraded random ID generation - patch from Rob Funk.            
                    352: 
                    353:              Fixed reading of domains in arguments with capital
                    354:               letters or trailing periods.
                    355: 
                    356:              Fixed potential SEGV when given bad options.
                    357: 
                    358:              Read options from /etc/dnsmasq.conf if it exists.
                    359:               Do sensible things with missing parameters, eg 
                    360:               "--resolv-file=" turns off reading /etc/resolv.conf.
                    361: 
                    362: release 1.11  Actually implement the -R flag promised in the 1.10 man page.
                    363: 
                    364:               Improve and rationalise the return codes in answers to
                    365:               queries. In the case that there are no available
                    366:               upstream servers to forward a query to, return REFUSED.
                    367:               This makes sendmail work better on modem connected
                    368:               systems when the modem link is down (Thanks to Roger Plant).
                    369:              Cache and return the NXDOMAIN status of failed queries:
                    370:               this makes the `host` command work when traversing search
                    371:               paths (Thanks to Peter Bailey). Set the "authoritative"
                    372:               bit in replies containing names from /etc/hosts or DHCP.
                    373: 
                    374:               Tolerate MS-DOS style line ending codes in /etc/hosts
                    375:              and /etc/resolv.conf, for people who copy from winsock
                    376:               installations.
                    377: 
                    378:              Allow specification of more than one resolv.conf file. This is 
                    379:               intended for laptops which connect via DHCP or
                    380:               PPP. Whichever resolv.conf was updated last is used.
                    381: 
                    382:               Allow -S flags which specify a domain but no server
                    383:               address. This gives local domains which are never forwarded.
                    384: 
                    385:              Add -E flag to automatically add the domain suffix to
                    386:               names in /etc/hosts -suggestion from Phil Harman.
                    387: 
                    388:              Always return a zero time-to-live for names derived from 
                    389:              DHCP which stops anthing else caching these
                    390:               names. Previously the TTL was derived from the lease
                    391:               time but that is incorrect since a lease can be given
                    392:               up early: dnsmasq would know this but anything with the
                    393:               name cached with long TTL would not be updated.
                    394: 
                    395:              Extended HAVE_IPV6 config flag to allow compliation on
                    396:              old systems which don't have modern library routines
                    397:              like inet_ntop(). Thanks to Phil Harman for the patch.
                    398: 
                    399: release 1.12  Allow more than one domain in server config lines and
                    400:              make "local" a synonym for "server". This makes things
                    401:              like "local=/localnet/thekelleys.org.uk/" legal. Allow
                    402:               port to specified as part of server address.
                    403: 
                    404:              Allow whole domains to have an IP address specified
                    405:               in /etc/dnsmasq.conf. (/etc/hosts doesn't work domains).
                    406:               address=/doubleclick.net/127.0.0.1 should catch all
                    407:               those nasty banner ads. Inspired by a patch 
                    408:              from Daniel Gryniewicz
                    409: 
                    410:              Log the source of each query when logging switched on. 
                    411: 
                    412:              Fix bug in script fragment for dhcpcd - thanks to Barry Stewart.
                    413:              
                    414:              Fix bug which meant that strict-order and self-mx were
                    415:              always enabled.
                    416: 
                    417:              Builds with Linux libc5 now - for the Freesco project.
                    418: 
                    419:              Fixed Makefile installation script (patch from Silvan
                    420:              Minghetti) and added CC and CFLAGS variables.
                    421: 
                    422:              Improve resource allocation to reduce vulnerability to
                    423:              DOS attacks - the old version could have all queries
                    424:              blocked by a continuous high-speed stream of
                    425:              queries. Now some queries will succeed, and the excess
                    426:              will be rejected with a server fail error. This change also
                    427:              protects against server-loops; setting up a resolving
                    428:               loop between two instances of dnsmasq is no longer
                    429:              catastrophic. The servers will continue to run, looped
                    430:              queries fail and a warning is logged. Thanks to C. Lee
                    431:              Taylor for help with this.
                    432:              
                    433: release 1.13  Added support for building rpms suitable for modern Suse 
                    434:              systems. (patch from Andi <cambeis@netplace.de>)
                    435:              
                    436:              Added options --group, --localmx, --local-ttl,
                    437:              --no-negcache, --addn-host.
                    438:              
                    439:              Moved all the various rpm-building bits into /rpm.
                    440:              
                    441:              Fix builds with glibc 2.1 (thanks to Cristian
                    442:              Ionescu-Idbohrn)
                    443:              
                    444:              Preserve case in domain names, as per RFC1035.
                    445:              
                    446:              Fixed ANY queries to domains with --address specification.
                    447:              
                    448:              Fixed FreeBSD build. (thanks to Steven Honson)
                    449:              
                    450:              Added -Q option which allows a specified port to be used
                    451:              to talk to upstream servers. Useful for people who want
                    452:              very paranoid firewalls which open individual UDP port.
                    453:              (thanks to David Coe for the patch)
                    454:                      
                    455: release 1.14  Fixed man page description of -b option which confused 
                    456:              /etc/hosts with /etc/resolv.conf. (thanks to Christopher
                    457:              Weimann)
                    458:              
                    459:              Fixed config.h to allow building under MACOS X and glibc
                    460:              2.0.x. (thanks to Matthew Gregan and Serge Caron)
                    461:              
                    462:              Added --except-interface option. (Suggested by Serge Caron)
                    463: 
                    464:              Added SIGUSR2 facility to re-scan for new
                    465:              interfaces. (Suggested by Serge Caron)
                    466: 
                    467:              Fixed SEGV in option-reading code for invalid options.
                    468:              (Thanks to Klaas Teschauer)
                    469: 
                    470:               Fixed man page to clarify effect of SIGUSR1 on
                    471:              /etc/resolv.conf.
                    472:              (Thanks to Klaas Teschauer)
                    473:              
                    474:              Check that recieved queries have only rfc1035-legal characters
                    475:              in them. This check is mainly to avoid bad strings being
                    476:              sent to syslog.
                    477: 
                    478:              Fixed &&/& confusion in option.c and added DESTDIR
                    479:              variable for "make install" (Thanks to Osvaldo 
                    480:               Marques for the patch.)
                    481: 
                    482:              Fixed /etc/hosts parsing code to cope with MS-DOS
                    483:              line-ends in the file. This was supposed to be done in
                    484:              version 1.11, but something got missed. (Thanks to Doug
                    485:              Copestake for helping to find this.)
                    486: 
                    487:              Squash repeated name/address pairs read from hosts
                    488:              files.
                    489: 
                    490:              Tidied up resource handling in util.c (Thanks to
                    491:              Cristian Ionescu-Idbohrn).
                    492: 
                    493:              Added hashed searching of domain names. People are starting
                    494:              to use dnsmasq with larger loads now, and bigger caches,
                    495:              and large lists of ad-block addresses. This means doing
                    496:              linear searches can start to use lots of CPU so I added hashed
                    497:              searching and seriously optimised the cache code for 
                    498:              algorithmic efficiency. Also upped the limit on cache 
                    499:              size to 10000.
                    500: 
                    501:              Fixed logging of the source of names from the additional
                    502:              hosts file and from the "bogus private address" option.
                    503: 
                    504:              Fixed spurious re-reading of empty lease files. (Thanks
                    505:              to Lewis Baughman for spotting this.)
                    506: 
                    507:              Fixed building under uclibc (patch from Cristian Ionescu-Idbohrn)
                    508:              
                    509:              Do some socket tweaking to allow dnsmasq to co-exist
                    510:              with BIND. Thanks to Stefan 'Sec' Zehl for the patch.
                    511: 
                    512: release 1.15  Added --bogus-nxdomain option.
                    513: 
                    514:               Restrict checking of resolv.conf and DHCP leases files
                    515:               to once per second. This is intended to improve
                    516:               performance under heavy loads. Also make a system call
                    517:              to get the current time once per query, rather than four
                    518:               times.
                    519: 
                    520:              Increased number of outstanding queries to 150 in
                    521:              config.h
                    522: 
                    523: release 1.16  Allow "/" characters in domain names - this fixes
                    524:               caching of RFC 2317 CNAME-PTR records.
                    525: 
                    526:              Fixed brain-fart in -B option when GETOPT_LONG not
                    527:              enabled - thanks to Steven Young and Jason Miller 
                    528:              for pointing this out.
                    529: 
                    530:              Generalised bogus-nxdomain code: allow more than one
                    531:              address to check, and deal with replies with multiple
                    532:              answer records. (Based on contribution from Humberto
                    533:              Massa.)
                    534: 
                    535:              Updated the documentation to include information about
                    536:              bogus-nxdomain and the Verisign tragedy.
                    537: 
                    538:              Added libraries needed on Solaris to Makefile.
                    539: 
                    540:              Added facility to set source address in queries to
                    541:              upstream nameservers. This is useful with multihomed
                    542:              hosts, especially when using VPNs. Thanks to Tom Fanning
                    543:              for suggesting this feature.
                    544: 
                    545:              Tweaked logging: log to facility LOCAL0 when in
                    546:              debug/no-daemon mode and changed level of query logging
                    547:              from INFO to DEBUG. Make log options controllable in
                    548:              config.h
                    549: 
                    550: release 1.17  Fixed crash with DHCP hostnames > 40 characters.
                    551: 
                    552:               Fixed name-comparision routines to not depend on Locale,
                    553:               in theory this versions since 1.15 could lock up or give
                    554:               wrong results when run with locale != 'C'.
                    555: 
                    556:              Fix potential lockup in cache code. (thanks to Henning
                    557:              Glawe for help chasing this down.)
                    558: 
                    559:              Made lease-file reader bullet-proof.
                    560: 
                    561:              Added -D option, suggested by Peter Fichtner.
                    562: 
                    563: release 1.18  Added round-robin DNS for names which have more than one
                    564:               address. In this case all the addresses will be
                    565:               returned, as before, but the order will change on each
                    566:               query.
                    567: 
                    568:              Remove stray tolower() and isalnum() calls missed in 
                    569:              last release to complete LOCALE independence.
                    570: 
                    571:              Allow port numbers in source-address specifications.
                    572: 
                    573:              For hostnames without a domain part which don't get
                    574:              forwarded because -D is in effect, return NXDOMAIN not
                    575:              an empty reply.
                    576: 
                    577:              Add code to return the software version in repsonse to the
                    578:              correct magic query in the same way as BIND. Use  
                    579:              "dig version.bind chaos txt" to make the query.
                    580: 
                    581:              Added negative caching for PTR (address to name) records.
                    582: 
                    583:               Ensure that names of the form typically used in PTR queries
                    584:               (ie w.x.yz.in-addr.arpa and IPv6 equivalents) get
                    585:               correct answers when queried as other types. It's
                    586:               unlikely that anyone would do this, but the change makes
                    587:               things pedantically correct.
                    588: 
                    589:              Taught dnsmasq to understand "bitstring" names, as these
                    590:              are used for PTR lookups of IPv6 addresses by some 
                    591:              resolvers and lookup tools. Dnsmasq now understands both
                    592:              the ip6.int domain and the ip6.arpa domain and both
                    593:              nibble and bitstring formats so it should work with any
                    594:              client code. Standards for this stuff have flip-flopped
                    595:              over the last few years, leaving many different clients
                    596:              in their wake. See RFC2673 for details of bitstrings.
                    597:              
                    598:              Allow '_' characters in domain names: Legal characters
                    599:              are now [a-z][A-Z].-_ Check names read from hosts files
                    600:              and leases files and reject illegal ones with a message
                    601:              in syslog. 
                    602: 
                    603:              Make empty domain names in server and address options 
                    604:              have the special meaning "unqualified
                    605:              names". (unqualified names are names without any dots in
                    606:              them). It's now possible to do server=//1.2.3.4 and have 
                    607:              unqualified names sent to a special nameserver.
                    608: 
                    609: release 2.0rc1  
                    610:               Moved source code into src/ directory.
                    611: 
                    612:              Fixes to cure compilation breakage when HAVE_IPV6 not
                    613:              set, thanks to Claas Hilbrecht.
                    614: 
                    615:              BIG CHANGE: added an integrated DHCP server and removed
                    616:              the code to read ISC dhcp.leases. This wins in terms 
                    617:              of ease of setup and configuration flexibility and 
                    618:              total machine resources consumed. 
                    619: 
                    620:              Re-jiged the signal handling code to remove a race
                    621:              condition and to be more portable.
                    622: 
                    623: release 2.0
                    624:             Thanks to David Ashworth for feedback which informed many 
                    625:             of the fixes below.
                    626: 
                    627:              Allow hosts to be specified by client ID in dhcp-hosts
                    628:              options. These are now one of 
                    629:              dhcp-host=<hardware addr>,.... 
                    630:              dhcp-host=id:<hex client id>,..... 
                    631:              dhcp-host=id:<ascii client id>,.....
                    632:             
                    633:             Allow dhcp-host options to specify any IP address on the
                    634:              DHCP-served network, not just the range available for
                    635:              dynamic allocation.
                    636: 
                    637:             Allow dhcp-host options for the same host with different
                    638:             IP adresses where the correct one will be selected for
                    639:             the network the host appears on.
                    640: 
                    641:             Fix parsing of --dhcp-option to allow more than one
                    642:             IP address and to allow text-type options.      
                    643: 
                    644:             Inhibit use of --dhcp-option to send hostname DHCP options.
                    645:             
                    646:             Update the DNS with DHCP information after re-reading
                    647:             /etc/hosts so that any DHCP derived names which have been
                    648:             shadowed by now-deleted hosts entries become visible.
                    649: 
                    650:             Fix typos in dnsmasq.conf.example
                    651: 
                    652:             Fixes to Makefile(s) to help pkgsrc packaging - patch 
                    653:             from "pancake".
                    654: 
                    655:             Add dhcp-boot option to support network boot.
                    656: 
                    657:             Check for duplicate IP addresses in dhcp-hosts lines
                    658:             and refuse to run if found. If allowed to remain these 
                    659:             can provoke an infinite loop in the DHCP protocol.
                    660: 
                    661:             Attempted to rationalise the .spec files for rpm
                    662:             building. There are now files for Redhat, Suse and
                    663:             Mandrake. I hope they work OK.
                    664: 
                    665:             Fixed hard-to-reproduce crash involving use of local
                    666:             domains and IPv6 queries. Thanks to Roy Marples for
                    667:             helping to track that one down.
                    668: 
                    669: release 2.1  
                    670:              Thanks to Matt Swift and Dag Wieers for many suggestions 
                    671:             which went into this release.
                    672:            
                    673:             Tweak include files to allow compilation on FreeBSD 5
                    674:              
                    675:              Fix unaligned access warnings on BSD/Alpha.
                    676: 
                    677:             Allow empty DHCP options, like so: dhpc-option=44
                    678:  
                    679:              Allow single-byte DHCP options like so: dhcp-option=20,1
                    680: 
                    681:             Allow comments on the same line as options in
                    682:             /etc/dnsmasq.conf
                    683: 
                    684:             Don't complain when the same name and address is
                    685:             allocated to a host using DHCP and /etc/hosts.
                    686:             
                    687:             Added to the example configuration the dnsmasq equivalent
                    688:             of the ISC dhcpd settings given in 
                    689:              http://www.samba.org/samba/ftp/docs/textdocs/DHCP-Server-Configuration.txt
                    690: 
                    691:             Fixed long-existing strangeness in Linux IPv6 interface
                    692:             discovery code. The flags field in /proc/net/if_inet6 is
                    693:             _not_ the interface flags. 
                    694: 
                    695:             Fail gracefully when getting an ENODEV error when trying
                    696:             to bind an IPv6 socket, rather than bailing out. Thanks
                    697:             to Jan Ischebeck for feedback on that.
                    698: 
                    699:             Allow the name->address mapping for static DHCP leases to
                    700:             be set by /etc/hosts. It's now possible to have
                    701:                dhcp-host=<mac addr>,wibble
                    702:             or even
                    703:                 dhcp-host=wibble
                    704:             and in /etc/hosts have
                    705:                wibble 1.2.3.4
                    706:             and for the correct thing to happen. Note that some sort
                    707:             of dhcp-host line is still needed, it's not possible for
                    708:             random host to claim an address in /etc/hosts without
                    709:             some explicit configuration.
                    710: 
                    711:             Make 0.0.0.0 in a dhcp-option to mean "the machine
                    712:             running dnsmasq".
                    713:                    
                    714:              Fix lease time spec when specified in dhcp-range and not
                    715:             in dhcp-host, previously this was always one hour.
                    716: 
                    717:              Fix problem with setting domains as "local only". -
                    718:              thanks to Chris Schank.
                    719: 
                    720:             Added support for max message size DHCP option.
                    721: 
                    722: release 2.2
                    723:              Fix total lack for DHCP functionality on
                    724:             Linux systems with IPv6 enabled. - thanks to
                    725:             Jonathon Hudson for spotting that.
                    726: 
                    727:             Move default config file under FreeBSD - patch from
                    728:             Steven Honson 
                    729: 
                    730: release 2.3
                    731:              Fix "install" makefile target. (reported by Rob Stevens)
                    732: 
                    733:             Ensure that "local=/domain/" flag is obeyed for all
                    734:             queries on a domain, not just A and AAAA. (Reported by
                    735:             Peter Fichtner.)
                    736: 
                    737:             Handle DHCPDECLINE messages and provide an error message
                    738:             in DHCPNAK messages.
                    739:             
                    740:             Add "domain" setting example to
                    741:             dnsmasq.conf.example. Thanks to K P Kirchdorfer for
                    742:             spotting that it was missing.
                    743: 
                    744:             Subtle change to the DHCPREQUEST handling code to work
                    745:             around a bug in the DHCP client in HP Jetdirect printers.
                    746:             Thanks to Marko Stolle for finding this problem.
                    747: 
                    748:             Return DHCP T1 and T2 times, with "fuzz" to desychronise lease
                    749:             renewals, as specified in the RFC.
                    750:             
                    751:             Ensure that the END option is always present in DHCP
                    752:             packets , even if the packet is too small to fit all 
                    753:             the requested options.
                    754: 
                    755:             Handle larger-than-default DHCP packets if required, up
                    756:             to the ethernet MTU.
                    757: 
                    758:             Fix a couple of places where the return code from
                    759:             malloc() was not checked.
                    760: 
                    761:             Cope with a machine taking a DHCP lease and then moving
                    762:             network so that the lease address is no longer valid.
                    763: 
                    764:             The DHCP server will now work via a BOOTP relay - remote
                    765:             networks are configured with the dhcp-range option the
                    766:             same as directly connected ones, but they need an
                    767:             additional netmask parameter. Eg
                    768:             --dhcp-range=192.168.4.10,192.168.4.50,255.255,255.0
                    769:              will enable DHCP service via a BOOTP relay on the
                    770:             192.168.4.0 network. 
                    771: 
                    772:             Add a limit on the number of available DHCP leases,
                    773:             otherwise the daemon could be DOSed by a malicious
                    774:             host. The default is 150, but it can be changed by the 
                    775:             dhcp-lease-max option.
                    776: 
                    777:             Fixed compilation on OpenBSD (thanks to Frederic Brodbeck
                    778:             for help with that.)
                    779:             
                    780:             Reworked the DHCP network handling code for two good
                    781:             effects: (1) The limit of one network only for DHCP on
                    782:             FreeBSD is now gone, (2) The DHCP server copes with
                    783:             dynamically created interfaces. The one-interface
                    784:             limitation remains for OpenBSD, which is missing
                    785:             extensions to the socket API which have been in Linux
                    786:             since version 2.2 and FreeBSD since version 4.8.
                    787: 
                    788:             Reworked the DNS network code to also cope with
                    789:             dynamically created interfaces. dnsmasq will now listen
                    790:             to the wildcard address and port 53 by default, so if no
                    791:             --interface or --address options are given it will handle
                    792:             dynamically created interfaces. The old behaviour can be
                    793:             restored with --bind-interfaces for people running BIND
                    794:             on one interface and dnsmasq on another. Note that
                    795:             --interface and --address options still work, but the
                    796:             filtering is done by dnsmasq, rather then the kernel.
                    797:             This works on Linux, and FreeBSD>=5.0. On systems which
                    798:             don't support the required API extensions, the old 
                    799:             behaviour is used, just as if --bind-interfaces had been set.
                    800: 
                    801:             Allow IPv6 support to be disabled at compile time. To do
                    802:             that, add -DNO_IPV6 to the CFLAGS. Thanks to Oleg
                    803:             I. Vdovikin for the suggestion to do that.
                    804: 
                    805:             Add ability to set DHCP options per network. This is done
                    806:             by giving a network an identifier like this:
                    807:             dhcp-range=red-net,192.168.0.10,192.168.0.50
                    808:             and then labeling options intended for that network only
                    809:             like this:
                    810:             dhcp-option=red-net,6,1.1.1.1
                    811:             Thanks to Oleg Vdovikin for arguing that one through.
                    812: 
                    813:             Made errors in the configuration file non-fatal: dnsmasq
                    814:             will now complain bitterly, but continue.
                    815: 
                    816:             Added --read-ethers option, to allow dnsmasq to pull
                    817:             static DHCP information from that file. 
                    818:             Thanks to Andi Cambeis for that suggestion.
                    819: 
                    820:             Added HAVE_BROKEN_RTC compilation option to support
                    821:             embedded systems without a stable RTC. Oleg Vdovikin
                    822:             helped work out how to make that work.
                    823: 
                    824: release 2.4
                    825:             Fixed inability to start when the lease file doesn't
                    826:             already exist. Thanks to Dag Wieers for reporting that.
                    827: 
                    828:             Fixed problem were dhcp-host configuration options did
                    829:             not play well with entries in /etc/ethers for the same
                    830:             host. Thanks again to Dag Wieers.
                    831: 
                    832:             Tweaked DHCP code to favour moving to a newly-configured
                    833:             static IP address rather than an old lease when doing
                    834:             DHCP allocation.
                    835: 
                    836:             Added --alias configuration option. This provides IPv4
                    837:             rewrite facilities like Cisco "DNS doctoring". Suggested
                    838:             by Chad Skeeters.
                    839: 
                    840:             Fixed bug in /etc/ethers parsing code triggered by tab
                    841:             characters. Qudos to Dag Wieers for hepling to nail that
                    842:             one.
                    843:             
                    844:             Added "bind-interfaces" option correctly.       
                    845: 
                    846: release 2.5
                    847:             Made "where are we allocating addresses?" code in DHCP
                    848:             server cope with requests via a relay which is on a
                    849:             directly connected network for which there is not a
                    850:             configured netmask. This strange state of affairs occurs
                    851:             with win4lin. Thanks to Alex Melt and Jim Horner for bug
                    852:             reports and testing with this. 
                    853: 
                    854:             Fixed trivial-but-irritating missing #include which broke
                    855:             compilation on *BSD.
                    856: 
                    857:             Force --bind-interfaces if IP-aliased interface
                    858:             specifications are used, since the sockets API provides
                    859:             no other sane way to determine which alias of an
                    860:             interface a packet was sent to. Thanks to Javier Kohen
                    861:             for the bug report.
                    862: 
                    863: release 2.6 
                    864:             Support Token Ring DHCP. Thanks to Dag Wieers for help
                    865:             testing. Note that Token ring support only works on Linux 
                    866:             currently.
                    867: 
                    868:             Fix compilation on MacOS X. Thanks to Bernhard Ehlers for
                    869:             the patch.
                    870: 
                    871:             Added new "ignore" keyword for
                    872:             dhcp-host. "dhcp-host=11:22:33:44:55:66,ignore" will
                    873:             cause the DHCP server to ignore any host with the given
                    874:             MAC address, leaving it to other servers on the
                    875:             network. This also works with client-id and hostnames.
                    876:             Suggestion by Alex Melt.
                    877: 
                    878:             Fixed parsing of hex client IDs. Problem spotted by Peter
                    879:             Fichtner.
                    880: 
                    881:             Allow conf-file options in configuration file, to
                    882:             provide an include function.
                    883:             
                    884:             Re-read /etc/ethers on receipt of SIGHUP.
                    885: 
                    886:             Added back the ability to read ISC dhcpd lease files, by
                    887:             popular demand. Note that this is deprecated and for
                    888:             backwards compatibility only. You can get back the 4K of
                    889:             memory that the code occupies by undefining
                    890:             "HAVE_ISC_READER" in src/config.h
                    891: 
                    892:             Added ability to disable "pool" DHCP address allocation
                    893:             whilst leaving static leases working. The syntax is
                    894:             "dhcp-range=192.168.0.0,static"
                    895:             Thanks to Grzegorz Nosek for the suggestion.
                    896: 
                    897:             Generalized dnsmasq-rh.spec file to work on Mandrake too,
                    898:             and removed dnsmasq-mdk.spec. Thanks to Doug Keller.
                    899: 
                    900:             Allow DHCP options which are tied to specific static
                    901:             leases in the same way as to specific networks.
                    902: 
                    903:             Generalised the dhcp-option parser a bit to allow hex
                    904:             strings as parameters. This is now legal:
                    905:             dhcp-option=128,e4:45:74:68:00:00
                    906:             Inspired by a patch from Joel Nordell.
                    907: 
                    908:             Changed the semantics of argument-less dhcp-options for
                    909:             the default-setting ones, ie 1, 3, 6 and 28. Now, doing
                    910:             eg, dhcp-option=3 stops dnsmasq from sending a default
                    911:             router option at all. Thanks to Scott Emmons for pointing
                    912:             out that this is useful.
                    913: 
                    914:             Fixed dnsmasq.conf parsing bug which interpreted port
                    915:             numbers in server= lines as a comment. To start a
                    916:             comment, a '#' character must now be a the start of a
                    917:             line or preceded by whitespace. Thanks to Christian
                    918:             Haggstrom for the bug report.
                    919: 
                    920: release 2.7  
                    921:              Allow the dhcp-host specification of id:* which makes 
                    922:             dnsmasq ignore any client-id. This is useful to ensure 
                    923:             that a dual-boot machine sees the same lease when one OS 
                    924:             gives a client-id and the other doesn't. It's also useful
                    925:             when PXE boot DHCP does not use client IDs but the OS it boots 
                    926:              does. Thanks to Grzegorz Nosek for suggesting this enhancement.
                    927: 
                    928:             No longer assume that ciaddr is zero in received DHCPDISCOVER 
                    929:             messages, just for security against broken clients.
                    930: 
                    931:             Set default of siaddr field to the address of the machine running 
                    932:              dnsmasq when not explicitly set using dhcp-boot
                    933:              option. This is the ISC dhcpd behaviour.  
                    934: 
                    935:              Send T1 and T2 options in DHCPOFFER packets. This is required
                    936:             by the DHCP client in some JetDirect printers. Thanks 
                    937:              to Paul Mattal for work on this.
                    938: 
                    939:             Fixed bug with DHCP on OpenBSD reported by Dominique Jacquel.
                    940:             The code which added loopback interfaces to the list
                    941:             was confusing the DHCP code, which expected one interface only.
                    942:             Solved by adding loopback interfaces to address list instead.
                    943: 
                    944:             Add dhcp-vendorclass option to allow options to be sent only
                    945:             to certain classes of clients.
                    946: 
                    947:             Tweaked option search code so that if a netid-qualified
                    948:             option is used, any unqualified option is ignored.
                    949:             
                    950:             Changed the method of picking new dynamic IP
                    951:             addresses. This used to use the next consecutive
                    952:             address as long it was free, now it uses a hash
                    953:             from the client hardware address. This reduces the amount
                    954:             of address movement for clients which let their lease
                    955:             expire and allows consecutive DHCPOFFERS to the same host
                    956:             to (almost always) be for the same address, without
                    957:             storing state before a lease is granted.
                    958:  
                    959:             Tweaked option handling code to return all possible
                    960:             options rather than none when DHCP "requested options"
                    961:             field is missing. This fixes interoperability with
                    962:             ancient IBM LANMAN DHCP clients. Thanks to Jim Louvau for
                    963:             help with this.
                    964: 
                    965: release 2.8
                    966:             Pad DHCP packets to a minimum size of 300 bytes. This
                    967:             fixes interoperability problems with the Linux in-kernel
                    968:             DHCP/BOOTP client. Thanks to Richard Musil for
                    969:             diagnosing this and supplying a patch.
                    970: 
                    971:             Fixed option-parsing bug and potential memory leak. Patch
                    972:             from Richard Musil.
                    973: 
                    974:             Improved vendor class configuration and added user class
                    975:             configuration. Specifically: (1) options are matched on
                    976:             the netids from dhcp-range, dhcp-host, vendor class and
                    977:             user class(es). Multiple net-ids are allowed and options
                    978:             are searched on them all. (2) matches agains vendor class
                    979:             and user class are now on a substring, if the given
                    980:             string is a substring of the vendor/user class, then a
                    981:             match occurs. Thanks again to Richard Musil for prompting
                    982:             this.
                    983: 
                    984:             Make "#" match any domain on --address and --server
                    985:             flags. --address=/#/1.2.3.4 will return 1.2.3.4 for _any_
                    986:             domain not otherwise matched. Of course
                    987:             --server=/#/1.2.3.4 is exactly equivalent to
                    988:             --server=1.2.3.4. Special request from Josh Howlett.
                    989:        
                    990:             Fixed a nasty bug which would cause dnsmasq to lose track
                    991:             of leases for hosts which had a --dhcp-host flag without
                    992:             a name specification. The mechanism for this was that
                    993:             the hostname could get erroneously set as a zero-length
                    994:             string and then written to the leases file as a
                    995:             mal-formed line. Restarting dnsmasq would then lose the lease.
                    996:             Alex Hermann's work helped chase down this problem.
                    997: 
                    998:             Add checks against DHCP clients which return zero-length
                    999:             hostnames. This avoids the potential lease-loss problems
                   1000:             reffered to above. Also, if a client sends a hostname when
                   1001:             it creates a lease but subsequently sends no or a
                   1002:             zero-length hostname whilst renewing, continue to use the
                   1003:             existing hostname, don't wipe it out. 
                   1004:             
                   1005:             Tweaked option parsing to flag some parameter errors.
                   1006: 
                   1007: release 2.9
                   1008:             Fixed interface filter code for two effects: 1) Fixed bug
                   1009:             where queries sent via loopback interface
                   1010:             but to the address of another interface were ignored
                   1011:             unless the loopback interface was explicitly configured.
                   1012:             2) on OpenBSD failure to configure one interface now
                   1013:             causes a fatal error on startup rather than an huge
                   1014:             stream of log messages. Thanks to Erik Jan Tromp for 
                   1015:             finding that bug.
                   1016: 
                   1017:             Changed server selection strategy to improve performance
                   1018:             when there are many available servers and some are
                   1019:             broken. The new algorithm is to pick as before for the
                   1020:             first try, but if a query is retried, to send to all
                   1021:             available servers in parallel. The first one to reply
                   1022:             then becomes prefered for the next query. This should 
                   1023:             improve reliability without generating significant extra
                   1024:             upstream load.
                   1025: 
                   1026:             Fixed breakage of special servers/addresses for
                   1027:             unqualified domains introduced in version 2.8 
                   1028:              
                   1029:             Allow fallback to "bind-interfaces" at runtime: Some
                   1030:             verions of *BSD seem to have enough stuff in the header
                   1031:             files to build but no kernel support. Also now log if
                   1032:             "bind-interfaces" is forced on.
                   1033: 
                   1034:             Log replies from upstream servers which refuse to do
                   1035:             recursion - dnsmasq is not a recursive nameserver and
                   1036:             relies on upstream servers to do the recursion, this
                   1037:             flags a configuration error.
                   1038: 
                   1039:             Disable client-id matching for hosts whose MAC address is
                   1040:             read from /etc/ethers. Patch from Oleg I. Vdovikin.
                   1041: 
                   1042:             Extended --mx-host flag to allow arbitrary targets for MX
                   1043:             records, suggested by Moritz Bunkus.
                   1044: 
                   1045:             Fixed build under NetBSD 2.0 - thanks to Felix Deichmann
                   1046:             for the patch.
                   1047:             
                   1048:             Deal correctly with repeated addresses in /etc/hosts. The
                   1049:             first name found is now returned for reverse lookups,
                   1050:             rather than all of them.
                   1051: 
                   1052:             Add back fatal errors when nonexistant 
                   1053:             interfaces or interface addresses are given but only in
                   1054:             "bind-interfaces" mode. Principle of least surprise applies.
                   1055:             
                   1056:             Allow # as the argument to --domain, meaning "read the
                   1057:             domain from the first search directive in
                   1058:             /etc.resolv.conf". Feature suggested by Evan Jones.
                   1059: 
                   1060: release 2.10
                   1061:            Allow --query-port to be set to a low port by creating and
                   1062:            binding the socket before dropping root. (Suggestion from
                   1063:            Jamie Lokier) 
                   1064: 
                   1065:            Support TCP queries. It turned out to be possible to do
                   1066:            this with a couple of hundred lines of code, once I knew
                   1067:            how. The executable size went up by a few K on i386.
                   1068:            There are a few limitations: data obtained via TCP is not
                   1069:            cached, and dynamically-created interfaces may break under
                   1070:            certain circumstances. Source-address or query-port
                   1071:            specifications are ignored for TCP.
                   1072: 
                   1073:            NAK attempts to renew a DHCP lease where the DHCP range
                   1074:            has changed and the lease is no longer in the allowed
                   1075:            range. Jamie Lokier pointed out this bug.
                   1076: 
                   1077:            NAK attempts to renew a pool DHCP lease when a statically
                   1078:            allocated address has become available, forcing a host to
                   1079:            move to its allocated address. Lots of people have
                   1080:            suggested this change and been rebuffed (they know who
                   1081:            they are) the straws that broke the camel's back were Tim
                   1082:            Cutts and Jamie Lokier.
                   1083: 
                   1084:            Remove any nameserver records from answers which are
                   1085:            modified by --alias flags. If the answer is modified, it
                   1086:            cannot any longer be authoritative.
                   1087: 
                   1088:            Change behaviour of "bogus-priv" option to return NXDOMAIN
                   1089:            rather than a PTR record with the dotted-quad address as
                   1090:            name. The new behaviour doesn't provoke tcpwrappers like
                   1091:            the old behavior did.
                   1092: 
                   1093:            Added a patch for the Suse rpm. That changes the default
                   1094:            group to one suitable for Suse and disables inclusion of
                   1095:            the ISC lease-file reader code. Thanks to Andy Cambeis for
                   1096:            his ongoing work on Suse packaging.
                   1097: 
                   1098:            Support forwarding of EDNS.0 The maximum UDP packet size 
                   1099:            defaults to 1280, but may be changed with the
                   1100:            --edns-packet-max option. Detect queries with the do bit
                   1101:            set and always forward them, since DNSSEC records are 
                   1102:            not cached. This behaviour is required to make
                   1103:            DNSSECbis work properly though dnsmasq. Thanks to Simon
                   1104:            Josefsson for help with this.
                   1105: 
                   1106:            Move default config file location under OpenBSD from
                   1107:            /usr/local/etc/dnsmasq.conf to /etc/dnsmasq.conf. Bug
                   1108:            report from Jonathan Weiss.
                   1109: 
                   1110:            Use a lease with matching MAC address for a host which
                   1111:            doesn't present a client-id, even if there was a client ID 
                   1112:            at some point in the past. This reduces surprises when
                   1113:            changing DHCP clients, adding id:* to a host, and from the
                   1114:            semantics change of /etc/ethers in 2.9. Thanks to Bernard
                   1115:            Sammer for finding that.
                   1116: 
                   1117:            Added a "contrib" directory and in it the dnslist utility,
                   1118:            from Thomas Tuttle.
                   1119: 
                   1120:            Fixed "fail to start up" problems under Linux with IPv6
                   1121:            enabled. It's not clear that these were an issue in
                   1122:            released versions, but they manifested themselves when TCP
                   1123:            support was added. Thanks to Michael Hamilton for
                   1124:            assistance with this.
                   1125: 
                   1126: version 2.11
                   1127:            Fixed DHCP problem which could result in two leases in the
                   1128:             database with the same address. This looked much more
                   1129:             alarming then it was, since it could only happen when a
                   1130:             machine changes MAC address but kept the same name. The
                   1131:             old lease would persist until it timed out but things
                   1132:             would still work OK. 
                   1133: 
                   1134:            Check that IP addresses in all dhcp-host directives are
                   1135:            unique and die horribly if they are not, since otherwise
                   1136:            endless protocol loops can occur. 
                   1137:            
                   1138:            Use IPV6_RECVPKTINFO as socket option rather than
                   1139:            IPV6_PKTINFO where available. This keeps late-model FreeBSD
                   1140:            happy.
                   1141: 
                   1142:            Set source interface when replying to IPv6 UDP
                   1143:            queries. This is needed to cope with link-local addresses.
                   1144: 
                   1145: version 2.12
                   1146:             Added extra checks to ensure that DHCP created DNS entries 
                   1147:            cannot generate multiple DNS address->name entries. Thanks to 
                   1148:            Stefan Monnier for finding the exact set of configuration
                   1149:             options which could create this.
                   1150: 
                   1151:            Don't set the the filterwin2k option in the example config
                   1152:            file and add warnings that is breaks Kerberos. Thanks to
                   1153:            Simon Josefsson and Timothy Folks for pointing that out.
                   1154:            
                   1155:            Log types of incoming queries as well as source and domain.
                   1156: 
                   1157:            Log NODATA replies generated as a result of the
                   1158:            filterwin2k option.
                   1159: 
                   1160: version 2.13
                   1161:            Fixed crash with un-named DHCP hosts introduced in 2.12.
                   1162:            Thanks to Nicolo Wojewoda and Gregory Gathy for bug reports.
                   1163: 
                   1164: version 2.14
                   1165:            Fix DHCP network detection for hosts which talk via a
                   1166:            relay. This makes lease renewal for such hosts work
                   1167:            correctly.
                   1168: 
                   1169:            Support RFC3011 subnet selectors in the DHCP server.
                   1170: 
                   1171:            Fix DHCP code to generate RFC-compliant responses
                   1172:             to hosts in the INIT-REBOOT state.
                   1173: 
                   1174:            In the DHCP server, set the receive buffer size on 
                   1175:            the transmit-only packet socket to zero, to avoid 
                   1176:            waste of kernel buffers.
                   1177: 
                   1178:            Fix DHCP address allocation code to use the whole of
                   1179:            the DHCP range, including the start and end addresses.
                   1180:            
                   1181:            Attempt an ICMP "ping" on new addresses before allocating 
                   1182:            them to leases, to avoid allocating addresses which are in use.
                   1183: 
                   1184:            Handle rfc951 BOOTP as well as DHCP for hosts which have
                   1185:            MAC address to IP address mapping defined.
                   1186: 
                   1187:            Fix compilation under MacOS X. Thanks to Chris Tomlinson.
                   1188: 
                   1189:            Fix compilation under NetBSD. Thanks to Felix Deichmann.
                   1190: 
                   1191:            Added "keep-in-foreground" option. Thanks to Sean
                   1192:            MacLennan for the patch.
                   1193: 
                   1194: version 2.15
                   1195:             Fixed NXDOMAIN/NODATA confusion for locally known
                   1196:             names. We now return a NODATA reponse for names which are
                   1197:             locally known. Now a query for (eg AAAA or MX) for a name
                   1198:            with an IPv4 address in /etc/hosts which fails upstream
                   1199:             will generate a NODATA response. Note that the query 
                   1200:            is still tried upstream, but a NXDOMAIN reply gets
                   1201:             converted to NODATA. Thanks to Eric de Thouars, Eric
                   1202:             Spakman and Mike Mestnik for bug reports/testing.
                   1203: 
                   1204:            Allow multiple dhcp-ranges within the same network. The
                   1205:            original intention was that there would be a dhcp-range
                   1206:            option for each network served, but there's no real reason
                   1207:            not to allow discontinuous ranges within a network so this
                   1208:            release adds support for that.
                   1209: 
                   1210:            Check for dhcp-ranges which are inconsistent with their 
                   1211:            netmask, and generate errors or warnings.
                   1212:            
                   1213:            Improve error messages when there are problems with
                   1214:            configuration.
                   1215: 
                   1216: version 2.16
                   1217:            Fixed typo in OpenBSD-only code which stopped compilation
                   1218:             under that OS. Chris Weinhaupl gets credit for reporting 
                   1219:             this.
                   1220: 
                   1221:            Added dhcp-authoritative option which restores non-RFC 
                   1222:            compliant but desirable behaviour of pre-2.14 versions and
                   1223:             avoids long timeouts while DHCP clients try to renew leases
                   1224:             which are unknown to dnsmasq. Thanks to John Mastwijk for 
                   1225:            help with this.      
                   1226: 
                   1227:            Added support to the DHCP option code to allow RFC-3397 
                   1228:            domain search DHCP option (119) to be sent.
                   1229: 
                   1230:             Set NONBLOCK on all listening sockets to workaround non-POSIX
                   1231:             compliance in Linux 2.4 and 2.6. This fixes rare hangs which
                   1232:             occured when corrupted packets were received. Thanks to
                   1233:            Joris van Rantwijk for chasing that down.
                   1234:  
                   1235:            Updated config.h for NetBSD. Thanks to Martin Lambers.
                   1236: 
                   1237:             Do a better job of distinguishing between retransmissions
                   1238:            and new queries when forwarding. This fixes a bug
                   1239:            triggered by the polipo web cache which sends A and AAAA
                   1240:            queries both with the same transaction-ID. Thanks to 
                   1241:            Joachim Berdal Haga and Juliusz Chroboczek for help with this.
                   1242: 
                   1243:            Rewrote cache code to store CNAMES, rather then chasing
                   1244:            them before storage. This eliminates bad situations when
                   1245:            clients get inconsistent views depending on if data comes
                   1246:            from the cache.
                   1247: 
                   1248:            Allow for more than one --addn-hosts flag.
                   1249: 
                   1250:            Clarify logged message when a DHCP lease clashes with an
                   1251:            /etc/hosts entry. Thanks to Mat Swift for the suggestion.
                   1252: 
                   1253:            Added dynamic-dnsmasq from Peter Willis to the contrib
                   1254:            section.
                   1255: 
                   1256: version 2.17
                   1257:            Correctly deduce the size of numeric dhcp-options, rather
                   1258:            than making wild guesses. Also cope with negative values.
                   1259: 
                   1260:            Fixed use of C library reserved symbol "index" which broke
                   1261:            under certain combinations of library and compiler.
                   1262: 
                   1263:            Make bind-interfaces work for IPv6 interfaces too.
                   1264: 
                   1265:            Warn if an interface is given for listening which doesn't
                   1266:            currently exist when not in bind-interfaces mode. (This is
                   1267:            already a fatal error when bind-interfaces is set.)
                   1268: 
                   1269:            Allow the --interface and --except-interface options to
                   1270:            take a comma-separated list of interfaces.
                   1271: 
                   1272:            Tweak --dhcp-userclass matching code to work with the
                   1273:            ISC dhclient which violates RFC3004 unless its
                   1274:            configuration is very warped. Thanks to Cedric Duval for
                   1275:            the bug report. 
                   1276: 
                   1277:            Allow more than one network-id tag in a dhcp-option. All
                   1278:            the tags must match to enable the option.
                   1279: 
                   1280:            Added dhcp-ignore option to disable classes of hosts based
                   1281:            on network-id tags. Also allow BOOTP options to be
                   1282:            controlled by network tags.
                   1283: 
                   1284:            Fill in sname, file and siaddr fields in replies to
                   1285:            DHCPINFORM messages.
                   1286: 
                   1287:            Don't send NAK replies to DHCPREQUEST packets for disabled
                   1288:            clients. Credit to Cedric Duval for spotting this.
                   1289: 
                   1290:            Fix rare crash associated with long DNS names and CNAME
                   1291:            records. Thanks to Holger Hoffstatte and especially Steve
                   1292:            Grecni for help chasing that one down.
                   1293: 
                   1294: version 2.18
                   1295:             Reworked the Linux interface discovery code (again) to
                   1296:            cope with interfaces which have only IPv6 addresses and 
                   1297:            interfaces with more than one IPv6 address. Thanks to
                   1298:             Martin Pels for help with that.
                   1299: 
                   1300:            Fix problems which occured when more than one dhcp-range
                   1301:            was specified in the same subnet: sometimes parameters
                   1302:            (lease time, network-id tag) from the wrong one would be
                   1303:            used. Thanks to Rory Campbell-Lange for the bug report.
                   1304: 
                   1305:            Reset cache statistics when clearing the cache.
                   1306: 
                   1307:            Enable long command line options on FreeBSD when the
                   1308:            C library supports them.
                   1309: 
                   1310: version 2.19 
                   1311:             Tweaked the Linux-only interface discovery code to cope 
                   1312:            with interface-indexes larger than 8 bits in
                   1313:             /proc/net/if_inet6. This only affects Linux, obviously.  
                   1314:            Thanks to Richard Atterer for the bug report.
                   1315: 
                   1316:            Check for under-length option fields in DHCP packets, a
                   1317:            zero length client-id, in particluar, could seriously
                   1318:            confuse dnsmasq 'till now. Thanks to Will Murname for help
                   1319:            with that.
                   1320: 
                   1321:            If a DHCP-allocated address has an associated name in
                   1322:            /etc/hosts, and the client does not provide a hostname
                   1323:            parameter and there is no hostname in a matching dhcp-host
                   1324:            option, send the /etc/hosts name as the hostname in 
                   1325:            the DHCP lease. Thanks to Will Murname for the suggestion.
                   1326: 
                   1327: version 2.20
                   1328:            Allow more than one instance of dnsmasq to run on a
                   1329:            machine, each providing DHCP service on a different
                   1330:            interface, provided that --bind-interfaces is set. This
                   1331:            configuration used to work, but regressed in version 2.14
                   1332: 
                   1333:            Fix compilation on Mac OS X. Thanks to Kevin Bullock.
                   1334:        
                   1335:            Protect against overlong names and overlong
                   1336:            labels in configuration and from DHCP.
                   1337: 
                   1338:            Fix interesting corner case in CNAME handling. This occurs
                   1339:            when a CNAME has a target which "shadowed" by a name in
                   1340:            /etc/hosts or from DHCP. Resolving the CNAME would sneak
                   1341:            the upstream value of the CNAME's target into the cache,
                   1342:            alongside the local value. Now that doesn't happen, though
                   1343:            resolving the CNAME still gives the unshadowed value. This
                   1344:            is arguably wrong but rather difficult to fix. The main
                   1345:            thing is to avoid getting strange results for the target
                   1346:            due to the cache pollution when resolving the
                   1347:            CNAME. Thanks to Pierre Habouzit for exploring the corner
                   1348:            and submitting a very clear bug report.
                   1349: 
                   1350:            Fix subtle bug in the DNS packet parsing code. It's almost
                   1351:            impossible to describe this succinctly, but the one known
                   1352:            manifestation is the inability to cache the A record for
                   1353:            www.apple.com. Thanks to Bob Alexander for spotting that.
                   1354: 
                   1355:            Support SRV records. Thanks to Robert Kean for the patches
                   1356:            for this.
                   1357: 
                   1358:            Fixed sign confusion in the vendor-id matching code which
                   1359:            could cause crashes sometimes. (Credit to Mark Wiater for
                   1360:            help finding this.)
                   1361: 
                   1362:            Added the ability to match the netid tag in a
                   1363:            dhcp-range. Combined with the ability to have multiple
                   1364:            ranges in a single subnet, this provides a means to
                   1365:            segregate hosts on different address ranges based on
                   1366:            vendorclass or userclass. Thanks to Mark Wiater for
                   1367:            prompting this enhancement.    
                   1368: 
                   1369:            Added preference values for MX records.
                   1370: 
                   1371:            Added the --localise-queries option.
                   1372: 
                   1373: version 2.21
                   1374:             Improve handling of SERVFAIL and REFUSED errors. Receiving
                   1375:            these now initiates search for a new good server, and a 
                   1376:            server which returns them is not a candidate as a good
                   1377:             server. Thanks to Istvan Varadi for pointing out the
                   1378:             problem.
                   1379: 
                   1380:            Tweak the time code in BROKEN_RTC mode.
                   1381: 
                   1382:            Sanity check lease times in dhcp-range and dhcp-host
                   1383:            configurations and force them to be at least two minutes
                   1384:            (120s) leases shorter than a minute confuse some clients,
                   1385:            notably Apple MacOS X. Rory Campbell-Lange found this
                   1386:            problem.
                   1387: 
                   1388:            Only warn once about an upstream server which is refusing to do
                   1389:            recursive queries.
                   1390: 
                   1391:            Fix DHCP address allocation problem when netid tags are in
                   1392:            use. Thanks to Will Murnane for the bug report and
                   1393:            subsequent testing.
                   1394: 
                   1395:            Add an additional data section to the reply for MX and SRV
                   1396:            queries. Add support for DNS TXT records. Thanks to Robert 
                   1397:            Kean and John Hampton for prompts and testing of these.
                   1398: 
                   1399:            Apply address rewriting to records in the additional data section
                   1400:            of DNS packets. This makes things like MX records work
                   1401:            with the alias function. Thanks to Chad Skeeters for
                   1402:            pointing out the need for this.
                   1403: 
                   1404:            Added support for quoted strings in config file.
                   1405: 
                   1406:            Detect and defeat cache-poisoning attacks which attempt to
                   1407:            send (malicious) answers to questions we didn't
                   1408:            send. These are ignored now even if the attacker manages
                   1409:            to guess a random query-id.
                   1410: 
                   1411:            Provide DHCP support for interfaces with multiple IP
                   1412:            addresses or aliases. This in only enabled under Linux.
                   1413:            See the FAQ entry for details.
                   1414: 
                   1415:            Revisit the MAC-address and client-id matching code to
                   1416:            provide saner behaviour with PXE boots, where some
                   1417:            requests have a client-id and some don't.
                   1418: 
                   1419:            Fixed off-by-one buffer overflow in lease file reading
                   1420:            code. Thanks to Rob Holland for the bug report.
                   1421: 
                   1422:            Added wildcard matching for MAC addresses in dhcp-host
                   1423:            options. A sensible suggestion by Nathaniel McCallum.
                   1424: 
                   1425: version 2.22
                   1426:             Fixed build problems on (many) systems with older libc
                   1427:             headers where <linux/types.h> is required before
                   1428:             <linux/netlink.h>. Enabled HAVE_RTNETLINK under uclibc now
                   1429:             that this fix is in place.
                   1430: 
                   1431:            Added support for encapsulated vendor-class-specific DHCP
                   1432:            options. Thanks to Eric Shattow for help with this.
                   1433: 
                   1434:            Fix regression in 2.21 which broke commas in filenames and
                   1435:            corrupted argv. Thanks to Eric Scott for the bugreport.
                   1436: 
                   1437:            Fixed stupid thinko which caused dnsmasq to wedge during
                   1438:            startup with certain MX-record options. Another 2.21 regression.
                   1439: 
                   1440:            Fixed broken-ness when reading /etc/ethers. 2.21 broke
                   1441:            this too.
                   1442: 
                   1443:            Fixed wedge with certain DHCP options. Yet another 2.21
                   1444:            regression. Rob Holland and Roy Marples chased this one
                   1445:            down.
                   1446: 
                   1447: version 2.23
                   1448:            Added a check to ensure that there cannot be more than one
                   1449:            dhcp-host option for any one IP address, even if the
                   1450:            addresses are assigned indirectly via a hostname and
                   1451:            /etc/hosts.
                   1452: 
                   1453:            Include a "server identifier" in DHCPNAK replies, as
                   1454:            required by RFC2131.
                   1455: 
                   1456:            Added method  support for DBus
                   1457:            (http://www.freedesktop.org/Software/dbus)
                   1458:            This is a superior way to re-configure dnsmasq on-the-fly
                   1459:            with different upstream nameservers, as the host moves
                   1460:            between networks. DBus support must be enabled in
                   1461:            src/config.h and should be considered experimental at this
                   1462:            point. See DBus-interface for the specification of the
                   1463:            DBus method calls supported.
                   1464: 
                   1465:            Added information to the FAQ about setting the DNS domain
                   1466:            in windows XP and Mac OS X, thanks to Rick Hull.
                   1467: 
                   1468:            Added sanity check to resolv.conf polling code to cope
                   1469:            with backwards-moving clocks. Thanks to Leonardo Canducci
                   1470:            for help with this.
                   1471: 
                   1472:            Handle so-called "A-for-A" queries, which are queries for
                   1473:            the address associated with a name which is already a
                   1474:            dotted-quad address. These should be handled by the
                   1475:            resolver code, but sometimes aren't and there's no point
                   1476:            in forwarding them.
                   1477: 
                   1478:            Added "no-dhcp-interface" option to disable DHCP service
                   1479:             on an interface, whilst still providing DNS.
                   1480: 
                   1481:            Fix format-string problem - config file names get passed
                   1482:            to fprintf as a format string, so % characters could cause
                   1483:            crashes. Thanks to Rob Holland for sleuthing that one.
                   1484: 
                   1485:            Fixed multiple compiler warnings from gcc 4. Thanks to 
                   1486:            Tim Cutts for the report.
                   1487: 
                   1488:            Send the hostname option on DHCP offer messages as well as
                   1489:            DHCP ack messages. This is required by the Rio Digital 
                   1490:            Audio Receiver. Thanks to Ron Frederick for the patch.
                   1491:  
                   1492:             Add 'd' (for day) as a possible time multiplier in lease 
                   1493:            time specifications. Thanks to Michael Deegan.
                   1494: 
                   1495:            Make quoting suppress recognition of IP addresses, so
                   1496:            dhcp-option=66,1.2.3.4 now means something different to
                   1497:             dhcp-option=66,"1.2.3.4", which sets the option to a
                   1498:            string value. Thanks to Brian Macauley for the bug report.
                   1499: 
                   1500:            Fixed the option parsing code to avoid segfaults from some
                   1501:            invalid configurations. Thanks to Wookey for spotting that one.
                   1502:  
                   1503:             Provide information about which compile-time options were 
                   1504:            selected, both in the log at startup and as part of the output 
                   1505:             from dnsmasq --version. Thanks to Dirk Schenkewitz for 
                   1506:             the suggestion. 
                   1507: 
                   1508:            Fix pathalogical behaviour when a broken client keeps sending
                   1509:             DHCPDISCOVER messages repeatedly and fast. Because dealing with
                   1510:             each of these takes a few seconds, (because of the ping) then a 
                   1511:            queue of DHCP packets could build up. Now, the results of a ping 
                   1512:             test are assumed to be valid for 30 seconds, so repeated waits are
                   1513:             not required. Thanks to Luca Landi for finding this.
                   1514: 
                   1515:            Allow DHCPINFORM requests without hardware address
                   1516:            information. These are generated by some browsers, looking
                   1517:            for proxy information. Thanks to Stanley Jaddoe for the
                   1518:            bug report on that.
                   1519: 
                   1520:            Add support of the "client FQDN" DHCP option. If present,
                   1521:            this is used to allow the client to tell dnsmasq its name,
                   1522:            in preference to (mis)using the hostname option. See 
                   1523:               http://tools.ietf.org/wg/dhc/draft-ietf-dhc-fqdn-option/\
                   1524:                 draft-ietf-dhc-fqdn-option-10.txt
                   1525:             for details of the draft spec.
                   1526: 
                   1527:            Added startup scripts for MacOS X Tiger/Panther to the 
                   1528:             contrib collection. Thanks to Tim Cutts.
                   1529: 
                   1530:            Tweak DHCP network selection so that clients which turn up
                   1531:            on our network in REBINDING state and with a lease for a
                   1532:            foreign network will get a NAK response. Thanks to Dan
                   1533:            Shechter for work on this and an initial patch and thanks
                   1534:            to Gyorgy Farkas for further testing.
                   1535: 
                   1536:            Fix DNS query forwarding for empty queries and forward
                   1537:            queries even when the recursion-desired bit is clear. This
                   1538:            allows "dig +trace" to work. Problem report from Uwe
                   1539:            Gansert.
                   1540: 
                   1541:            Added "const" declarations where appropriate, thanks to
                   1542:            Andreas Mohr for the patch.
                   1543: 
                   1544:            Added --bootp-dynamic option and associated
                   1545:            functionality. Thanks to Josef Wolf for the suggestion.
                   1546:  
                   1547: version 2.24
                   1548:             Updated contrib/openvpn/dnsmasq.patch from Joseph Tate.
                   1549: 
                   1550:            Tweaked DHCP NAK code, a DHCP NAK is now unicast as a
                   1551:            fallback in cases where a broadcast is futile: namely in
                   1552:            response to a unicast REQUEST from a non-local network
                   1553:            which was not sent via a relay.
                   1554: 
                   1555:            Slightly changed the semantics of domain matching in
                   1556:            --server and --address configs. --server=/domain.com/ still
                   1557:            matches domain.com and sub.domain.com but does not 
                   1558:            now match newdomain.com The semantics of 
                   1559:             --server=/.domain.com/ are unchanged. 
                   1560:            Thanks to Chris Blaise for the patch.
                   1561: 
                   1562:            Added backwards-compatible internationalisation support.
                   1563:            The existing make targets, (all, dnsmasq, install) work as
                   1564:            before. New ones (all-i18n, and install-i18n) add gettext.
                   1565:            The translations live in po/ There are not too many
                   1566:            strings, so if anybody can provide translations (and for
                   1567:            the manpage....) please send them in.
                   1568: 
                   1569:            Tweak behaviour on receipt of REFUSED or SERVFAIL rcodes,
                   1570:            now the query gets retried on all servers before returning
                   1571:            the error to the source of the query. Thanks to Javier
                   1572:            Kohen for the report.
                   1573:  
                   1574:            Added Polish translation - thanks to Tomasz Sochanski.
                   1575: 
                   1576:            Changed default manpage install location from /usr/man 
                   1577:            to /usr/share/man 
                   1578: 
                   1579:            Added Spanish translation - thanks to Christopher Chatham.
                   1580: 
                   1581:            Log a warning when a DHCP packet is truncated due to lack
                   1582:            of space. (Thanks to Michael Welle for the prompt to do
                   1583:            this.)
                   1584:            
                   1585:            Added French translation - thanks to Lionel Tricon.
                   1586: 
                   1587:            Added Indonesian translation - thanks to Salman AS.
                   1588: 
                   1589:            Tweaked the netlink code to cope with interface broadcast
                   1590:            address not set, or set to 0.0.0.0.
                   1591: 
                   1592:            Fixed problem assigning fixed addresses to hosts when more
                   1593:            than one dhcp-range is available. Thanks to Sorin Panca
                   1594:            for help chasing this down.
                   1595: 
                   1596:            Added more explict error mesages to the hosts file and
                   1597:            ethers file reading code. Markus Kaiserswerth suffered to
                   1598:            make this happen.
                   1599: 
                   1600:            Ensure that a hostname supplied by a DHCP client can never
                   1601:            override one configured on the server. Previously, any
                   1602:            host claiming a name would be given it, even if that
                   1603:            over-rode a dhcp-host declaration, leading to potentially 
                   1604:             confusing situations.
                   1605: 
                   1606:            Added Slackware package-build stuff into contrib/ The i18n
                   1607:            effort broke the current scripts, and working ones were
                   1608:            needed for testing, so they ended up here rather than make
                   1609:            Pat re-invent the wheel.
                   1610:            
                   1611:            Added Romanian translation, thanks to Sorin Panca for
                   1612:            that.
                   1613: 
                   1614: version 2.25
                   1615:             Fixed RedHat spec file for FC4 - thanks to Werner Hoelzl
                   1616:             and Andrew Bird.
                   1617: 
                   1618:             Fixed Suse spec file - thanks to Steven Springl.
                   1619: 
                   1620:            Fixed DHCP bug when two distict subnets are on the same
                   1621:            physical interface. Thanks to Pawel Zawora for finding
                   1622:            this and suggesting the fix.
                   1623: 
                   1624:            Added logging to make it explicit when dnsmasq falls back
                   1625:            from using RT-netlink sockets to the old ioctl API for
                   1626:            getting information about interfaces. Doing this
                   1627:            completely silently made remote debugging hard.
                   1628: 
                   1629:            Merged uclibc build fixes from the OpenWRT package into
                   1630:            src/config.h 
                   1631: 
                   1632:            Added Norwegian translation - thanks to Jan Erik Askildt.
                   1633: 
                   1634: version 2.26
                   1635:            Fixed SuSe rpm patch problem - thanks to Steven Springl.
                   1636: 
                   1637:            Fixed crash when attempting to send a DHCP NAK to a host
                   1638:            which believes it has a lease on an unknown
                   1639:            network. Thanks to Lutz Pressler for the bug report and
                   1640:            patch.
                   1641: 
                   1642: version 2.27
                   1643:            Tweaked DHCP behaviour when a client attempts to renew a lease
                   1644:             which dnsmasq doesn't know about. Previously that would always
                   1645:             result in a DHCPNAK. Now, in dhcp-authoritative mode, the
                   1646:             lease will be created, if it's legal. This makes dnsmasq work
                   1647:             better if the lease database is lost, for example on an OpenWRT
                   1648:            system which reboots. Thanks to Stephen Rose for work on
                   1649:            this.
                   1650: 
                   1651:            Added the ability to support RFC-3442 style destination
                   1652:            descriptors in dhcp-options. This makes classless static
                   1653:            routes easy to do, eg dhcp-option=121,192.168.1.0/24,1.2.3.4
                   1654: 
                   1655:            Added error-checking to the code which writes the lease
                   1656:            file. If this fails for any reason, an error is logged,
                   1657:            and a retry occurs after one minute. This should improve
                   1658:            things eg when a filesystem is full. Thanks to Jens Holze
                   1659:            for the bug report.
                   1660: 
                   1661:            Fixed breakage of the "/#/ matches any domain" facility
                   1662:            which happened in 2.24. Thanks to Peter Surda for the bug
                   1663:            report.
                   1664: 
                   1665:            Use "size_t" and "ssize_t" types where appropriate in the
                   1666:            code.
                   1667: 
                   1668:            Fix buggy CNAME handling in mixed IPv4 and IPv6
                   1669:            queries. Thanks to Andreas Pelme for help finding that.
                   1670: 
                   1671:            Added some code to attempt to re-transmit DNS queries when 
                   1672:            a network interface comes up.  This helps on DoD links, 
                   1673:            where frequently the packet which triggers dialling is
                   1674:             a DNS query, which then gets lost. By re-sending, we can 
                   1675:            avoid the lookup failing. This function is only active
                   1676:            when netlink support is compiled in, and therefore only
                   1677:            under Linux. Thanks to Jean Wolter for help with this.
                   1678: 
                   1679:            Tweaked the DHCP tag-matching code to work correctly with
                   1680:            NOT-tag conditions. Thanks to Lutz Pressler for finding
                   1681:            the bug.
                   1682: 
                   1683:            Generalised netid-tag matching in dhcp-range statements to
                   1684:            allow more than one tag.
                   1685: 
                   1686:            Added --dhcp-mac to do MAC address matching in the same
                   1687:            way as vendorclass and userclass matching. A good
                   1688:            suggestion from Lutz Pressler.
                   1689: 
                   1690:            Add workaround for buggy early Microsoft DHCP clients
                   1691:            which need zero-termination in string options.
                   1692:            Thanks to Fabiano Pires for help with this.
                   1693: 
                   1694:            Generalised the DHCP code to cope with any hardware
                   1695:            address type, at least on Linux. *BSD is still limited to
                   1696:            ethernet only.
                   1697: 
                   1698: version 2.28
                   1699:             Eliminated all raw network access when running on
                   1700:             Linux. All DHCP network activity now goes through the IP
                   1701:             stack. Packet sockets are no longer required. Apart from
                   1702:             being a neat hack, this should also allow DHCP over IPsec
                   1703:             to work better. On *BSD and OS X, the old method of raw net
                   1704:             access through BPF is retained.
                   1705: 
                   1706:            Simplified build options. Networking is now slimmed down
                   1707:            to a choice of "linux" or "other". Netlink is always used
                   1708:            under Linux. Since netlink has been available since 2.2
                   1709:            and non-optional in an IPv4-configured  kernel since 2.4,
                   1710:            and the dnsmasq netlink code is now well tested, this 
                   1711:            should work out fine. 
                   1712: 
                   1713:            Removed decayed build support for libc5 and Solaris.
                   1714:            
                   1715:            Removed pselect code: use a pipe for race-free signal
                   1716:            handling instead, as this works everywhere.
                   1717: 
                   1718:            No longer enable the ISC leasefile reading code in the
                   1719:            distributed sources. I doubt there are many people left
                   1720:            using this 1.x compatibility code. Those that are will
                   1721:            have to explicitly enable it in src/config.h.
                   1722: 
                   1723:            Don't send the "DHCP maximum message size" option, even if 
                   1724:            requested. RFC2131 says this is a "MUST NOT".
                   1725: 
                   1726:            Support larger-than-minimum DHCP message. Dnsmasq is now
                   1727:            happy to get larger than 576-byte DHCP messages, and will
                   1728:            return large messages, if permitted by the "maximum
                   1729:            message size" option of the message to which it is
                   1730:            replying. There's now an arbitrary sanity limit of 16384
                   1731:            bytes.
                   1732: 
                   1733:            Added --no-ping option. This fixes an RFC2131 "SHOULD".
                   1734: 
                   1735:            Building on the 2.27 MAC-address changes, allow clients to 
                   1736:            provide no MAC address at all, relying on the client-id as
                   1737:            a unique identifier. This should make things like DHCP for
                   1738:            USB come easier.
                   1739: 
                   1740:            Fixed regression in netlink code under 2.2.x kernels which 
                   1741:            occurred in 2.27. Erik Jan Tromp is the vintage kernel fan 
                   1742:            who found this. P.S. It looks like this "netlink bind:
                   1743:            permission denied" problem occured in kernels at least as
                   1744:            late a 2.4.18. Good information from Alain Richoux.
                   1745: 
                   1746:            Added a warning when it's impossible to give a host its
                   1747:            configured address because the address is leased
                   1748:            elsewhere.  A sensible suggestion from Mircea Bardac.
                   1749: 
                   1750:            Added minimal support for RFC 3046 DHCP relay agent-id
                   1751:            options. The DHCP server now echoes these back to the
                   1752:            relay, as required by the RFC. Also, RFC 3527 link selection 
                   1753:            sub-options are honoured.
                   1754: 
                   1755:            Set the process "dumpable" flag when running in debug
                   1756:            mode: this makes getting core dumps from root processes
                   1757:            much easier.
                   1758:            
                   1759:            Fixed one-byte buffer overflow which seems to only cause
                   1760:            problems when dnsmasq is linked with uclibc. Thanks to
                   1761:            Eric House and Eric Spakman for help in chasing this down.
                   1762: 
                   1763:            Tolerate configuration screwups which lead to the DHCP
                   1764:            server attemping to allocate its own address to a
                   1765:            client; eg setting the whole subnet range as a DHCP
                   1766:            range. Addresses in use by the server are now excluded
                   1767:            from use by clients.
                   1768: 
                   1769:            Did some thinking about HAVE_BROKEN_RTC mode, and made it
                   1770:            much simpler and better. The key is to just keep lease
                   1771:            lengths in the lease file. Since these normally never
                   1772:            change, even as the lease is renewed, the lease file never
                   1773:            needs to change except when machines arrive on the network
                   1774:            or leave. This eliminates the code for timed writes, and
                   1775:            reduces the amount of wear on a flash filesystem to the
                   1776:            absolute minimum. Also re-did the basic time function in
                   1777:            this mode to use the portable times(), rather than parsing
                   1778:            /proc/uptime.
                   1779: 
                   1780:            Believe the source port number when replying to unicast 
                   1781:            DHCP requests and DHCP requests via a relay, instead of always 
                   1782:             using the standard ports.  This will allow relays on 
                   1783:             non-standard ports and DHCPINFORM from unprivileged ports
                   1784:             to work. The source port sent by unconfigured clients is still 
                   1785:             ignored, since this may be unreliable. This means that a DHCP 
                   1786:             client must use the standard port to do full configuration.
                   1787:  
                   1788: version 2.29
                   1789:            Fixed compilation on OpenBSD (thanks to Tom Hensel for the
                   1790:            report). 
                   1791: 
                   1792:            Fixed false "no interface" errors when --bind-interfaces is
                   1793:            set along with --interface=lo or --listen-address. Thanks
                   1794:            to Paul Wise for the report.
                   1795: 
                   1796:            Updated patch for SuSE rpm. Thanks to Steven Springl.
                   1797: 
                   1798:            It turns out that there are some Linux kernel
                   1799:            configurations which make using the capability system
                   1800:            impossible. If this situation occurs then continue, running
                   1801:            as root, and log a warning. Thanks to Scott Wehrenberg
                   1802:            for help tracking this down.
                   1803: 
                   1804: version 2.30
                   1805:             Fixed crash when a DHCP client requested a broadcast
                   1806:             reply. This problem was introduced in version 2.28.
                   1807:            Thanks to Sandra Dekkers for the bug report.
                   1808: 
                   1809: version 2.31
                   1810:            Added --dhcp-script option. There have been calls for this
                   1811:            for a long time from many good people. Fabio Muzzi gets
                   1812:            the prize for finally convincing me.
                   1813: 
                   1814:            Added example dbus config file and moved dbus stuff into
                   1815:            its own directory.
                   1816: 
                   1817:            Removed horribly outdated Redhat RPM build files. These
                   1818:            are obsolete now that dnsmasq in in Fedora extras. Thanks
                   1819:            to Patrick "Jima" Laughton, the Fedora package
                   1820:            maintainer.
                   1821: 
                   1822:            Added workaround for Linux kernel bug. This manifests
                   1823:            itself as failure of DHCP on kernels with "support for
                   1824:            classical IP over ATM" configured. That includes most
                   1825:            Debian kernel packages. Many thanks to A. Costa and
                   1826:            Benjamin Kudria for their huge efforts in chasing this
                   1827:            down.
                   1828: 
                   1829:            Force-kill child processes when dnsmasq is sent a sigterm,
                   1830:            otherwise an unclosed TCP connection could keep dnsmasq
                   1831:            hanging round for a few minutes.
                   1832: 
                   1833:            Tweaked config.h logic for uclibc build. It will now pick
                   1834:            up MMU and IPV6 status correctly on every system I tested.
                   1835: 
                   1836: version 2.32 
                   1837:            Attempt a better job of replacing previous configuration
                   1838:            when re-reading /etc/hosts and /etc/ethers. SIGHUP is
                   1839:            still not identical to a restart under all circumstances,
                   1840:            but it is for the common case of name->MAC address in
                   1841:            /etc/ethers and name->IP address in /etc/hosts.
                   1842: 
                   1843:            Fall back to broadcast for DHCP to an unconfigured client
                   1844:            when the MAC address size is greater than 14 bytes.
                   1845: 
                   1846:            Fix problem in 2.28-onwards releases which breaks DNS on
                   1847:            Mac OS X. Thanks to Doug Fields for the bug report and
                   1848:            testing.
                   1849: 
                   1850:            Added fix to allow compilation on c89-only compilers.
                   1851:            Thanks to John Mastwijk for the patch.
                   1852:           
                   1853:            Tweak resolv file polling code to work better if there is
                   1854:            a race between updating the mtime and file contents. This
                   1855:            is not normally a problem, but it can be on systems which
                   1856:            replace nameservers whilst active. The code now continues
                   1857:            to read resolv.conf until it gets at least one usable
                   1858:            server. Thanks to Holger Mauermann for help with this.
                   1859: 
                   1860:            If a client DECLINEs an address which is allocated to it
                   1861:            via dhcp-host or /etc/hosts, lock that address out of use
                   1862:            for ten minutes, instead of forever, and log when it's not
                   1863:            being used because of the lock-out. This should provide
                   1864:            less surprising behaviour when a configured address can't be
                   1865:            used. Thanks to Peter Surda and Heinz Deinhart for input
                   1866:            on this.
                   1867: 
                   1868:            Fixed *BSD DHCP breakage with only some
                   1869:            arches/compilers, depending on structure padding rules.
                   1870:            Thanks to Jeb Campbell and Tom Hensel for help with this.
                   1871: 
                   1872:            Added --conf-dir option. Suggestion from Aaron Tygart.
                   1873: 
                   1874:            Applied patch from Brent Cook which allows netids in
                   1875:            dhcp-option configuration lines to be prefixed by
                   1876:            "net:". This is not required by the syntax, but it is
                   1877:            consistent with other configuration items.
                   1878: 
                   1879:            Added --log-facility option. Suggestion from Fabio Muzzi.
                   1880: 
                   1881:            Major update to Spanish translation. Many thanks to Chris
                   1882:            Chatham. 
                   1883: 
                   1884:            Fixed gcc-4.1 strict-alias compilation warning.
                   1885: 
                   1886: version 2.33
                   1887:             Remove bash-specific shellcode from the Makefile.
                   1888: 
                   1889:            Fix breakage with some DHCP relay implementations which
                   1890:            was introduced in 2.28. Believing the source port in
                   1891:            DHCP requests and sending the reply there is sometimes a
                   1892:            bad thing to do, so I've reverted to always sending to
                   1893:            the relay on port 68. Thanks to Daniel Hamlin and Alex
                   1894:            (alde) for bug reports on this.
                   1895: 
                   1896:            Moved the SuSe packaging files to contrib. I will no
                   1897:            longer attempt to maintain this in the source tarball. It
                   1898:            will be done externally, in the same way as packaging for
                   1899:            other distros. Suse packages are available from 
                   1900:            ftp://ftp.suse.com/pub/people/ug/
                   1901:            
                   1902:            Merged patch from Gentoo to honour $LDFLAGS environment.
                   1903: 
                   1904:            Fix bug in resolv.conf processing when more than one file
                   1905:            is being checked.
                   1906: 
                   1907:            Add --dns-forward-max option.
                   1908: 
                   1909:            Warn if --resolv-file flags are ignored because of
                   1910:            --no-resolv. Thanks to Martin F Krafft for spotting this
                   1911:            one.
                   1912: 
                   1913:             Add --leasefile-ro option which allows the use of an 
                   1914:             external lease database. Many thanks to Steve Horbachuk 
                   1915:            for assistance developing this feature.
                   1916: 
                   1917:            Provide extra information to lease-change script via its
                   1918:            environment. If the host has a client-id, then
                   1919:            DNSMASQ_CLIENT_ID will be set. Either the lease length (in
                   1920:            DNSMASQ_LEASE_LENGTH) or lease expiry time (in
                   1921:            DNSMASQ_LEASE_EXPIRES) will be set, depending on the
                   1922:            HAVE_BROKEN_RTC compile-time option. This extra
                   1923:            information should make it possible to maintain the lease
                   1924:            database in external storage such as LDAP or a relational
                   1925:            database. Note that while leasefile-ro is set, the script
                   1926:             will be called with "old"  events more often, since 
                   1927:            changes to the client-id and lease length
                   1928:            (HAVE_BROKEN_RTC) or lease expiry time (otherwise) 
                   1929:            are now flagged. 
                   1930: 
                   1931:            Add contrib/wrt/* which is an example implementation of an
                   1932:            external persistent lease database for *WRT distros with 
                   1933:            the nvram command.
                   1934: 
                   1935:            Add contrib/wrt/dhcp_release.c which is a small utility 
                   1936:            which removes DHCP leases using DHCPRELEASE operation in
                   1937:            the DHCP protocol.
                   1938: 
                   1939: version 2.34
                   1940:            Tweak network-determination code for another corner case:
                   1941:            in this case a host forced to move between dhcp-ranges on
                   1942:            the same physical interface. Thanks to Matthias Andree.
                   1943:            
                   1944:            Improve handling of high DNS loads by throttling acceptance of
                   1945:            new queries when resources are tight. This should be a
                   1946:            better response than the "forwarding table full..."
                   1947:            message which was logged before.
                   1948: 
                   1949:            Fixed intermittent infinite loop when re-reading
                   1950:            /etc/ethers after SIGHUP. Thanks to Eldon Ziegler for the
                   1951:            bug report.
                   1952: 
                   1953:            Provide extra information to the lease-change script: when
                   1954:            a lease loses its hostname (because a new lease comes
                   1955:            along and claims the same new), the "old" action is called 
                   1956:            with the current state of the lease, ie no name. The
                   1957:            change is to provide the former name which the lease had
                   1958:            in the environment variable DNSMASQ_OLD_HOSTNAME. This
                   1959:            helps scripts which do stuff based on hostname, rather
                   1960:            than IP address. Also provide vendor-class and user-class
                   1961:            information to the lease-change script when a new lease is
                   1962:            created in the DNSMASQ_VENDOR_CLASS and
                   1963:            DNSMASQ_USER_CLASS<n> environment variables. Suggestion 
                   1964:             from Francois-Xavier Le Bail.
                   1965: 
                   1966:            Run the lease change script as root, even when dnsmasq is
                   1967:            configured to change UID to an unprivileged user. Since
                   1968:            most uses of the lease change script need root, this
                   1969:            allows its use whilst keeping the security advantages of
                   1970:            running the daemon without privs. The script is invoked
                   1971:            via a small helper process which keeps root UID, and
                   1972:            validates all data received from the main process. To get
                   1973:            root, an attacker would have to break dnsmasq and then
                   1974:            break the helper through the restricted comms channel 
                   1975:            linking the two.
                   1976:            
                   1977:            Add contrib/port-forward/* which is a script to set up 
                   1978:            port-forwards using the DHCP lease-change script. It's
                   1979:            possible to add a host to a config file by name, and when
                   1980:            that host gets a DHCP lease, the script will use iptables
                   1981:            to set up port-forwards to configured ports at the address
                   1982:            which the host is allocated. The script also handles
                   1983:            setting up the port-forward iptables entries after reboot,
                   1984:            using the persistent lease database, and removing them
                   1985:            when a host leaves and its DHCP lease expires.
                   1986: 
                   1987:            Fix unaligned access problem which caused wrong log
                   1988:            messages with some clients on some architectures. Thanks
                   1989:            to Francois-Xavier Le Bail for the bugreport.
                   1990: 
                   1991:            Fixed problem with DHCPRELEASE and multi-address
                   1992:            interfaces. Enhanced contrib/wrt/dhcp_release to cope
                   1993:            under these circumstances too. Thanks to Eldon Ziegler for
                   1994:            input on this.
                   1995: 
                   1996:            Updated French translation: thanks to Gildas Le Nadan.
                   1997: 
                   1998:            Upgraded the name hash function in the DNS cache. Thanks
                   1999:            to Oleg Khovayko for good work on this.
                   2000: 
                   2001:            Added --clear-on-reload flag.  Suggestion from Johannes
                   2002:            Stezenbach.
                   2003: 
                   2004:            Treat a nameserver address of 0.0.0.0 as "nothing". Erwin 
                   2005:             Cabrera spotted that specifying a nameserver as 0.0.0.0 
                   2006:            breaks things badly; this is because the network stack
                   2007:            treats is as "this host" and an endless loop ensues.
                   2008:                   
                   2009:             Added Webmin module in contrib/webmin. Thanks to Neil
                   2010:             Fisher for that.
                   2011: 
                   2012: version 2.35
                   2013:            Generate an "old" script event when a client does a DHCPREQUEST
                   2014:            in INIT-REBOOT or SELECTING state and the lease already
                   2015:            exists. Supply vendor and user class information to these
                   2016:            script calls.
                   2017: 
                   2018:            Added support for Dragonfly BSD to src/config.h
                   2019: 
                   2020:            Removed "Upgrading to 2.0" document, which is ancient
                   2021:            history now.
                   2022: 
                   2023:            Tweak DHCP networking code for BSD, esp OpenBSD. Added a 
                   2024:            workaround for a bug in OpenBSD 4.0: there should finally
                   2025:             be support for multiple interfaces under OpenBSD now.
                   2026:            Note that no version of dnsmasq before 2.35 will work for 
                   2027:            DHCP under OpenBSD 4.0 because of a kernel bug.
                   2028:            Thanks to Claudio Jeker, Jeb Campbell and Cristobal 
                   2029:            Palmer for help with this.
                   2030: 
                   2031:            Optimised the cache code for the case of large
                   2032:            /etc/hosts. This is mainly to remove the O(n-squared)
                   2033:            algorithm which made reading large (50000 lines) files 
                   2034:            slow, but it also takes into account the size of 
                   2035:            /etc/hosts when building hash tables, so overall 
                   2036:            performance should be better. Thanks to "koko" for 
                   2037:            pointing out the problem.
                   2038: 
                   2039: version 2.36
                   2040:            Added --dhcp-ignore-names flag which tells dnsmasq not to
                   2041:            use names provided by DHCP clients. Suggestion from 
                   2042:            Thomas M Steenholdt.
                   2043: 
                   2044:            Send netmask and broadcast address DHCP options always,
                   2045:            even if the client doesn't request them. This makes a few
                   2046:            odd clients work better.
                   2047: 
                   2048:            Added simple TFTP function, optimised for net-boot. It is
                   2049:            now possible to net boot hosts using only dnsmasq. The
                   2050:            TFTP server is read-only, binary-mode only, and designed to be
                   2051:            secure; it adds about 4K to the dnsmasq binary. 
                   2052:  
                   2053:            Support DHCP option 120, SIP servers, (RFC 3361). Both
                   2054:             encodings are supported, so both --dhcp-option=120,192.168.2.3
                   2055:             and        --dhcp-option=120,sip.example.net will work. Brian
                   2056:             Candler pointed out the need for this.
                   2057: 
                   2058:            Allow spaces in domain names, to support DNS-SD.
                   2059: 
                   2060:            Add --ptr-record flag, again for DNS-SD. Thanks to Stephan 
                   2061:            Sokolow for the suggestion.
                   2062:            
                   2063:            Tolerate leading space on lines in the config file. Thanks
                   2064:            to Luigi Rizzo for pointing this out.
                   2065: 
                   2066:            Fixed netlink.c to cope with headers from the Linux 2.6.19
                   2067:            kernel. Thanks to Philip Wall for the bug report.
                   2068: 
                   2069:            Added --dhcp-bridge option, but only to the FreeBSD
                   2070:            build. This fixes an oddity with a a particular bridged
                   2071:            network configuration on FreeBSD. Thanks to Luigi Rizzo
                   2072:            for the patch.
                   2073: 
                   2074:            Added FAQ entry about running dnsmasq in a Linux
                   2075:            vserver. Thanks to Gildas le Nadan for the information.  
                   2076: 
                   2077:            Fixed problem with option parsing which interpreted "/" as
                   2078:            an address and not a string. Thanks to Luigi Rizzo
                   2079:            for the patch.
                   2080: 
                   2081:            Ignore the --domain-needed flag when forwarding NS
                   2082:            and SOA queries, since NS queries of TLDs are always legit.
                   2083:            Marcus Better pointed out this problem.
                   2084: 
                   2085:            Take care to forward signed DNS requests bit-perfect, so
                   2086:            as not to affect the validity of the signature. This
                   2087:            should allow DDNS updates to be forwarded.
                   2088: 
                   2089: version 2.37
                   2090:             Add better support for RFC-2855 DHCP-over-firewire and RFC
                   2091:            -4390 DHCP-over-InfiniBand. A good suggestion from Karl Svec.
                   2092: 
                   2093:            Some efficiency tweaks to the cache code for very large
                   2094:            /etc/hosts files. Should improve reverse (address->name)
                   2095:            lookups and garbage collection. Thanks to Jan 'RedBully'
                   2096:            Seiffert for input on this.
                   2097: 
                   2098:            Fix regression in 2.36 which made bogus-nxdomain
                   2099:            and DNS caching unreliable. Thanks to Dennis DeDonatis
                   2100:            and Jan Seiffert for bug reports.
                   2101: 
                   2102:            Make DHCP encapsulated vendor-class options sane. Be
                   2103:            warned that some conceivable existing configurations 
                   2104:            using these may break, but they work in a much 
                   2105:            simpler and more logical way now. Prepending
                   2106:            "vendor:<client-id>" to an option encapsulates it 
                   2107:            in option 43, and the option is sent only if the 
                   2108:            client-supplied vendor-class substring-matches with 
                   2109:            the given client-id. Thanks to Dennis DeDonatis for 
                   2110:            help with this.
                   2111: 
                   2112:            Apply patch from Jan Seiffert to tidy up tftp.c
                   2113: 
                   2114:            Add support for overloading the filename and servername 
                   2115:            fields in DHCP packet. This gives extra option-space when
                   2116:            these fields are not being used or with a modern client
                   2117:            which supports moving them into options.
                   2118: 
                   2119:            Added a LIMITS section to the man-page, with guidance on
                   2120:            maximum numbers of clients, file sizes and tuning.
                   2121: 
                   2122: release 2.38
                   2123:            Fix compilation on *BSD. Thanks to Tom Hensel.
                   2124: 
                   2125:            Don't send length zero DHCP option 43 and cope with 
                   2126:            encapsulated options whose total length exceeds 255 octets
                   2127:            by splitting them into multiple option 43 pieces.
                   2128: 
                   2129:            Avoid queries being retried forever when --strict-order is
                   2130:            set and an upstream server returns a SERVFAIL
                   2131:            error. Thanks to Johannes Stezenbach for spotting this.
                   2132: 
                   2133:            Fix BOOTP support, broken in version 2.37.
                   2134: 
                   2135:            Add example dhcp-options for Etherboot.
                   2136: 
                   2137:            Add \e (for ASCII ESCape) to the set of valid escapes
                   2138:            in config-file strings.
                   2139: 
                   2140:            Added --dhcp-option-force flag and examples in the
                   2141:            configuration file which use this to control PXELinux.
                   2142: 
                   2143:            Added --tftp-no-blocksize option.
                   2144: 
                   2145:            Set netid tag "bootp" when BOOTP (rather than DHCP) is in
                   2146:            use. This makes it easy to customise which options are
                   2147:            sent to BOOTP clients. (BOOTP allows only 64 octets for
                   2148:            options, so it can be necessary to trim things.)
                   2149: 
                   2150:            Fix rare hang in cache code, a 2.37 regression. This
                   2151:            probably needs an infinite DHCP lease and some bad luck to
                   2152:            trigger. Thanks to Detlef Reichelt for bug reports and testing.
                   2153: 
                   2154: release 2.39
                   2155:            Apply patch from Mike Baker/OpenWRT to ensure that names
                   2156:            like "localhost." in /etc/hosts with trailing period 
                   2157:            are treated as fully-qualified.
                   2158: 
                   2159:            Tolerate and ignore spaces around commas in the
                   2160:            configuration file in all circumstances. Note that this
                   2161:            may change the meaning of a few existing config files, for
                   2162:            instance
                   2163:            txt-record=mydomain.com, string
                   2164:            would have a leading space in the string before, and now
                   2165:            will not. To get the old behaviour back, use quotes:
                   2166:            txt-record=mydomain.com," string"
                   2167: 
                   2168:            /a is no longer a valid escape in quoted strings.
                   2169: 
                   2170:            Added symbolic DHCP option names. Instead of
                   2171:            dhcp-option = 3, 1.2.3.4 
                   2172:            it is now possible to do
                   2173:            dhcp-option = option:router, 1.2.3.4
                   2174:            To see the list of known DHCP options, use the 
                   2175:             command "dnsmasq --help dhcp"
                   2176:            Thanks to Luigi Rizzo for a patch and good work on this.
                   2177: 
                   2178:            Overhauled the log code so that logging can be asynchronous; 
                   2179:            dnsmasq then no longer blocks waiting for the syslog() library
                   2180:            call. This is important on systems where syslog
                   2181:            is being used to log over the network (and therefore doing
                   2182:            DNS lookups) and syslog is using dnsmasq as its DNS
                   2183:            server. Having dnsmasq block awaiting syslog under 
                   2184:            such circumstances can lead to syslog and dnsmasq 
                   2185:            deadlocking. The new behaviour is enabled with a new
                   2186:             --log-async flag, which can also be used to tune the
                   2187:            queue length. Paul Chambers found and diagnosed 
                   2188:            this trap for the unwary. He also did much testing of 
                   2189:            the solution along with Carlos Carvalho.
                   2190: 
                   2191:            --log-facility can now take a file-name instead of a 
                   2192:            facility name. When this is done, dnsmasq logs to the 
                   2193:            file and not via syslog. (Failures early in startup, 
                   2194:            whilst reading configuration, will still go to syslog, 
                   2195:            and syslog is used as a log-of-last-resort if the file
                   2196:            cannot be written.)
                   2197: 
                   2198:            Added --log-dhcp flag. Suggestion from Carlos Carvalho.
                   2199: 
                   2200:            Made BINDIR, MANDIR and LOCALEDIR independently
                   2201:            over-rideable in the makefile. Suggestion from Thomas
                   2202:            Klausner.
                   2203: 
                   2204:            Added 127.0.0.0/8 and 169.254.0.0/16 to the address
                   2205:            ranges affected by --bogus-priv. Thanks to  Paul 
                   2206:            Chambers for the patch.
                   2207: 
                   2208:            Fixed failure of TFTP server with --listen-address. Thanks
                   2209:            to William Dinkel for the bug report.
                   2210: 
                   2211:            Added --dhcp-circuitid and --dhcp-remoteid for RFC3046
                   2212:            relay agent data matching.
                   2213:  
                   2214:            Added --dhcp-subscrid for RFC3993 subscriber-id relay
                   2215:            agent data matching.
                   2216: 
                   2217:            Correctly garbage-collect connections when upstream
                   2218:            servers go away as a result of DBus transactions.
                   2219: 
                   2220:            Allow absolute paths for TFTP transfers even when
                   2221:            --tftp-root is set, as long as the path matches the root,
                   2222:            so /var/ftp/myfile is OK with tftp-root=/var/ftp.
                   2223:            Thanks for Thomas Mizzi for the patch.
                   2224: 
                   2225:            Updated Spanish translation - thanks to Chris Chatham.
                   2226: 
                   2227:            Updated French translation - thanks to Gildas Le Nadan.
                   2228: 
                   2229:            Added to example conf file example of routing PTR queries
                   2230:            for a subnet to a different nameserver. Suggestion from
                   2231:            Jon Nicholson.
                   2232: 
                   2233:            Added --interface-name option. This provides a facility 
                   2234:            to add a domain name with a dynamic IP address taken from
                   2235:            the address of a local network interface. Useful for
                   2236:            networks with dynamic IPs.
                   2237: 
                   2238: version 2.40
                   2239:             Make SIGUSR2 close-and-reopen the logfile when logging 
                   2240:            direct to a file. Thanks to Carlos Carvalho for 
                   2241:            suggesting this. When a logfile is created, change
                   2242:            its ownership to the user dnsmasq will run as, don't
                   2243:            leave it owned by root.
                   2244: 
                   2245:            Set a special tag, "known" for hosts which are matched by
                   2246:            a dhcp-host or /etc/ethers line. This is especially
                   2247:            useful to be able to do --dhcp-ignore=#known, like ISCs
                   2248:            "deny unknown-clients".
                   2249: 
                   2250:            Explicitly set a umask before creating the leases file,
                   2251:            rather than relying on whatever we inherited. The
                   2252:            permissions are set to 644.
                   2253: 
                   2254:            Fix handling of fully-qualified names in --dhcp-host
                   2255:            directives and in /etc/ethers. These are now rejected 
                   2256:            if the domain doesn't match that given by --domain,   
                   2257:            and used correctly otherwise. Before, putting
                   2258:            a FQDN here could cause the whole FQDN to be used as
                   2259:            hostname. Thanks to Michael Heimpold for the bug report.
                   2260: 
                   2261:            Massive but trivial edit to make the "daemon" variable 
                   2262:            global, instead of copying the same value around as the
                   2263:            first argument to half the functions in the program.
                   2264:            
                   2265:            Updated Spanish manpage and message catalog. Thanks 
                   2266:            to Chris Chatham.
                   2267:            
                   2268:            Added patch for support of DNS LOC records in
                   2269:            contrib/dns-loc. Thanks to Lorenz Schori.
                   2270: 
                   2271:            Fixed error in manpage: dhcp-ignore-name ->
                   2272:            dhcp-ignore-names. Thanks to Daniel Mentz for spotting
                   2273:            this.
                   2274: 
                   2275:            Use client-id as hash-seed for DHCP address allocation
                   2276:            with Firewire and Infiniband, as these don't supply an MAC
                   2277:            address. 
                   2278: 
                   2279:            Tweaked TFTP file-open code to make it behave sensibly
                   2280:            when the filesystem changes under its feet.
                   2281: 
                   2282:            Added DNSMASQ_TIME_REMAINING environment variable to the 
                   2283:            lease-script.
                   2284: 
                   2285:            Always send replies to DHCPINFORM requests to the source
                   2286:            of the request and not to the address in ciaddr. This
                   2287:            allows third-party queries.
                   2288:            
                   2289:            Return "lease time remaining" in the reply to a DHCPINFORM
                   2290:            request if there exists a lease for the host sending the
                   2291:            request.
                   2292: 
                   2293:            Added --dhcp-hostsfile option. This gives a superset of
                   2294:            the functionality provided by /etc/ethers. Thanks to 
                   2295:            Greg Kurtzer for the suggestion.
                   2296: 
                   2297:            Accept keyword "server" as a synonym for "nameserver" in 
                   2298:            resolv.conf. Thanks to Andrew Bartlett for the report.
                   2299: 
                   2300:            Add --tftp-unique-root option. Suggestion from Dermot
                   2301:            Bradley.
                   2302: 
                   2303:            Tweak TFTP retry timer to avoid problems with difficult
                   2304:            clients. Thanks to Dermot Bradley for assistance with
                   2305:            this. 
                   2306:            
                   2307:            Continue to use unqualified hostnames provided by DHCP
                   2308:            clients, even if the domain part is illegal. (The domain
                   2309:            is  ignored, and an error logged.) Previously in this
                   2310:            situation, the whole name whould have been
                   2311:            rejected. Thanks to Jima for the patch.
                   2312:            
                   2313:            Handle EINTR returns from wait() correctly and reap
                   2314:            our children's children if necessary. This fixes 
                   2315:            a problem with zombie-creation under *BSD when using
                   2316:            --dhcp-script.
                   2317: 
                   2318:            Escape spaces in hostnames when they are stored in the
                   2319:            leases file and passed to the lease-change
                   2320:            script. Suggestion from Ben Voigt.
                   2321: 
                   2322:            Re-run the lease chamge script with an "old" event for
                   2323:            each lease when dnsmasq receives a SIGHUP.
                   2324: 
                   2325:            Added more useful exit codes, including passing on a
                   2326:            non-zero exit code from the lease-script "init" call when
                   2327:            --leasefile-ro is set.
                   2328: 
                   2329:            Log memory allocation failure whilst the daemon is
                   2330:            running. Allocation failures during startup are fatal, 
                   2331:            but lack of memory whilst running is worked around.
                   2332:            This used to be silent, but now is logged.
                   2333: 
                   2334:            Fixed misaligned memory access which caused problems on
                   2335:            Blackfin CPUs. Thanks to Alex Landau for the patch.
                   2336: 
                   2337:            Don't include (useless) script-calling code when NO_FORK
                   2338:            is set. Since this tends to be used on very small uclinux 
                   2339:            systems, it's worth-while to save some code-size.
                   2340: 
                   2341:            Don't set REUSEADDR on TFTP listening socket. There's no
                   2342:            need to do so, and it creates confusing behaviour when
                   2343:            inetd is also listening on the same port. Thanks to Erik
                   2344:            Brown for spotting the problem.
                   2345: 
                   2346: version 2.41
                   2347:             Remove deprecated calls when compiled against libdbus 1.1.
                   2348:            
                   2349:            Fix "strict-alias" warning in bpf.c
                   2350: 
                   2351:            Reduce dependency on Gnu-make in build system: dnsmasq now
                   2352:            builds with system make under OpenBSD.
                   2353: 
                   2354:            Port to Solaris. Dnsmasq 1.x used to run under Solaris,
                   2355:            and this release does so again, for Solaris 9 or better.
                   2356: 
                   2357:            Allow the DNS function to be completely disabled, by
                   2358:            setting the port to zero "--port=0". The allows dnsmasq to
                   2359:            be used as a simple DHCP server, simple TFTP server, or
                   2360:            both, but without the DNS server getting in the way.
                   2361: 
                   2362:            Fix a bug where NXDOMAIN could be returned for a query
                   2363:            even if the name's value was known for a different query
                   2364:            type. This bug could be prodded with 
                   2365:             --local=/domain/ --address=/name.domain/1.2.3.4 
                   2366:            An IPv6 query for name.domain would return NXDOMAIN, and
                   2367:            not the correct NOERROR. Thanks to Lars Nooden for
                   2368:            spotting the bug and Jima for diagnosis of the problem.
                   2369: 
                   2370:            Added per-server stats to the information logged when
                   2371:            dnsmasq gets SIGUSR1.
                   2372: 
                   2373:            Added counts of queries forwarded and queries answered
                   2374:            locally (from the cache, /etc/hosts or config).
                   2375: 
                   2376:            Fixed possible crash bug in DBus IPv6 code. Thanks to Matt
                   2377:            Domsch and Jima.
                   2378: 
                   2379:            Tighten checks for clashes between hosts-file and
                   2380:            DHCP-derived names. Multiple addresses associated with a
                   2381:            name in hosts-file no longer confuses the check.
                   2382: 
                   2383:            Add --dhcp-no-override option to fix problems with some
                   2384:            combinations of stage zero and stage one
                   2385:            bootloaders. Thanks to Steve Alexander for the bug report.
                   2386:   
                   2387:            Add --tftp-port-range option. Thanks to Daniel Mierswa for
                   2388:            the suggestion.
                   2389:  
                   2390:            Add --stop-dns-rebind option. Thanks to Collin Mulliner
                   2391:            for the patch.
                   2392: 
                   2393:            Added GPL version 3 as a license option.
                   2394:  
                   2395:            Added --all-servers option. Thanks to Peter Naulls for the
                   2396:            patch.
                   2397: 
                   2398:            Extend source address mechanism so that the interface used
                   2399:            to contact an upstream DNS server can be nailed
                   2400:            down. Something like "--server=1.2.3.4@eth1" will force
                   2401:            the use of eth1 for traffic to DNS-server 1.2.3.4. This
                   2402:            facility is only available on Linux and Solaris. Thanks to
                   2403:            Peter Naulls for prompting this.         
                   2404:        
                   2405:            Add --dhcp-optsfile option. Thanks to Carlos Carvalho for
                   2406:             the suggestion.
                   2407: 
                   2408:            Fixed failure to set source address for server connections
                   2409:            when using TCP. Thanks to Simon Capper for finding this
                   2410:            bug.
                   2411: 
                   2412:            Refuse to give a DHCP client the address it asks for if
                   2413:            the address range in question is not available to that
                   2414:            particular host. Thanks to Cedric Duval for the bug
                   2415:            report. 
                   2416: 
                   2417:            Changed behavior of DHCP server to always return total length of
                   2418:            a new lease in DHCPOFFER, even if an existing lease
                   2419:            exists. (It used to return the time remaining on the lease
                   2420:            whne one existed.) This fixes problems with the Sony Ericsson
                   2421:            K610i phone. Thanks to Hakon Stordahl for finding and
                   2422:            fixing this.
                   2423: 
                   2424:            Add DNSMASQ_INTERFACE to the environment of the
                   2425:            lease-change script. Thanks to Nikos Mavrogiannopoulos for
                   2426:            the patch.
                   2427: 
                   2428:            Fixed broken --alias functionality. Thanks to Michael
                   2429:            Meelis for the bug report.
                   2430: 
                   2431:            Added French translation of the man page. Thank to Gildas
                   2432:            Le Nadan for that.
                   2433: 
                   2434:            Add --dhcp-match flag, to check for arbitrary options in
                   2435:            DHCP messages from clients. This enables use of dnsmasq
                   2436:            with gPXE. Thanks to Rance Hall for the suggestion.
                   2437: 
                   2438:            Added --dhcp-broadcast, to force broadcast replies to DHCP
                   2439:            clients which need them but are too dumb or too old to
                   2440:            ask. Thanks to Bodo Bellut for the suggestion.
                   2441: 
                   2442:            Disable path-MTU discovery on DHCP and TFTP sockets. This
                   2443:            is never needed, and the presence of DF flags in the IP
                   2444:            header confuses some broken PXE ROMS. Thanks again to Bodo
                   2445:            Bellut for spotting this.
                   2446: 
                   2447:            Fix problems with addresses which have multiple PTR
                   2448:            records - all but one of these could get lost. 
                   2449: 
                   2450:            Fix bug with --address and ANY query type seeing REFUSED
                   2451:            return code in replies. Thanks to Mike Wright for spotting
                   2452:            the problem.
                   2453: 
                   2454:            Update Spanish translation. Thanks to Chris Chatham.
                   2455: 
                   2456:            Add --neg-ttl option.
                   2457:            
                   2458:            Add warnings about the bad effects of --filterwin2k on
                   2459:            SIP, XMPP and Google-talk to the example config file.
                   2460:            
                   2461:            Fix va_list abuse in log.c. This fixes crashes on powerpc
                   2462:            when debug mode is set. Thanks to Cedric Duval for the
                   2463:            patch. 
                   2464: 
                   2465: version 2.42
                   2466:             Define _GNU_SOURCE to avoid problems with later glibc
                   2467:             headers. Thanks to Jima for spotting the problem.
                   2468: 
                   2469:            Add --dhcp-alternate-port option. Thanks to Jan Psota for
                   2470:            the suggestion.
                   2471: 
                   2472:            Fix typo in code which is only used on BSD, when Dbus and
                   2473:            IPv6 support is enabled. Thanks to Roy Marples.
                   2474:            
                   2475:            Updated Polish translations - thank to Jan Psota.
                   2476: 
                   2477:            Fix OS detection logic to cope with GNU/FreeBSD.
                   2478: 
                   2479:            Fix unitialised variable in DBus code - thanks to Roy
                   2480:            Marples.
                   2481: 
                   2482:            Fix network enumeration code to work on later NetBSD -
                   2483:            thanks to Roy Marples.
                   2484:            
                   2485:            Provide --dhcp-bridge on all BSD variants.
                   2486: 
                   2487:            Define _LARGEFILE_SOURCE which removes an arbitrary 2GB
                   2488:             limit on logfiles. Thanks to Paul Chambers for spotting 
                   2489:             the problem.
                   2490: 
                   2491:            Fix RFC3046 agent-id echo code, broken for many
                   2492:            releases. Thanks to Jeremy Laine for spotting the problem
                   2493:            and providing a patch.
                   2494: 
                   2495:            Added Solaris 10 service manifest from David Connelly in
                   2496:            contrib/Solaris10
                   2497:                     
                   2498:            Add --dhcp-scriptuser option.           
                   2499: 
                   2500:            Support new capability interface on suitable Linux 
                   2501:            kernels, removes "legacy support in use" messages. Thanks 
                   2502:             to Jorge Bastos for pointing this out. 
                   2503: 
                   2504:            Fix subtle bug in cache code which could cause dnsmasq to
                   2505:            lock spinning CPU in rare circumstances. Thanks to Alex
                   2506:            Chekholko for bug reports and help debugging. 
                   2507: 
                   2508:            Support netascii transfer mode for TFTP.
                   2509: 

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