File:  [ELWIX - Embedded LightWeight unIX -] / embedaddon / dnsmasq / dnsmasq.conf.example
Revision 1.1.1.1 (vendor branch): download - view: text, annotated - select for diffs - revision graph
Mon Jul 29 19:37:40 2013 UTC (10 years, 11 months ago) by misho
Branches: elwix, dnsmasq, MAIN
CVS tags: v2_66p0, v2_66, HEAD
dnsmasq

    1: # Configuration file for dnsmasq.
    2: #
    3: # Format is one option per line, legal options are the same
    4: # as the long options legal on the command line. See
    5: # "/usr/sbin/dnsmasq --help" or "man 8 dnsmasq" for details.
    6: 
    7: # Listen on this specific port instead of the standard DNS port
    8: # (53). Setting this to zero completely disables DNS function,
    9: # leaving only DHCP and/or TFTP.
   10: #port=5353
   11: 
   12: # The following two options make you a better netizen, since they
   13: # tell dnsmasq to filter out queries which the public DNS cannot
   14: # answer, and which load the servers (especially the root servers)
   15: # unnecessarily. If you have a dial-on-demand link they also stop
   16: # these requests from bringing up the link unnecessarily.
   17: 
   18: # Never forward plain names (without a dot or domain part)
   19: #domain-needed
   20: # Never forward addresses in the non-routed address spaces.
   21: #bogus-priv
   22: 
   23: 
   24: # Uncomment this to filter useless windows-originated DNS requests
   25: # which can trigger dial-on-demand links needlessly.
   26: # Note that (amongst other things) this blocks all SRV requests,
   27: # so don't use it if you use eg Kerberos, SIP, XMMP or Google-talk.
   28: # This option only affects forwarding, SRV records originating for
   29: # dnsmasq (via srv-host= lines) are not suppressed by it.
   30: #filterwin2k
   31: 
   32: # Change this line if you want dns to get its upstream servers from
   33: # somewhere other that /etc/resolv.conf
   34: #resolv-file=
   35: 
   36: # By  default,  dnsmasq  will  send queries to any of the upstream
   37: # servers it knows about and tries to favour servers to are  known
   38: # to  be  up.  Uncommenting this forces dnsmasq to try each query
   39: # with  each  server  strictly  in  the  order  they   appear   in
   40: # /etc/resolv.conf
   41: #strict-order
   42: 
   43: # If you don't want dnsmasq to read /etc/resolv.conf or any other
   44: # file, getting its servers from this file instead (see below), then
   45: # uncomment this.
   46: #no-resolv
   47: 
   48: # If you don't want dnsmasq to poll /etc/resolv.conf or other resolv
   49: # files for changes and re-read them then uncomment this.
   50: #no-poll
   51: 
   52: # Add other name servers here, with domain specs if they are for
   53: # non-public domains.
   54: #server=/localnet/192.168.0.1
   55: 
   56: # Example of routing PTR queries to nameservers: this will send all
   57: # address->name queries for 192.168.3/24 to nameserver 10.1.2.3
   58: #server=/3.168.192.in-addr.arpa/10.1.2.3
   59: 
   60: # Add local-only domains here, queries in these domains are answered
   61: # from /etc/hosts or DHCP only.
   62: #local=/localnet/
   63: 
   64: # Add domains which you want to force to an IP address here.
   65: # The example below send any host in double-click.net to a local
   66: # web-server.
   67: #address=/double-click.net/127.0.0.1
   68: 
   69: # --address (and --server) work with IPv6 addresses too.
   70: #address=/www.thekelleys.org.uk/fe80::20d:60ff:fe36:f83
   71: 
   72: # Add the IPs of all queries to yahoo.com, google.com, and their
   73: # subdomains to the vpn and search ipsets:
   74: #ipset=/yahoo.com/google.com/vpn,search
   75: 
   76: # You can control how dnsmasq talks to a server: this forces
   77: # queries to 10.1.2.3 to be routed via eth1
   78: # server=10.1.2.3@eth1
   79: 
   80: # and this sets the source (ie local) address used to talk to
   81: # 10.1.2.3 to 192.168.1.1 port 55 (there must be a interface with that
   82: # IP on the machine, obviously).
   83: # server=10.1.2.3@192.168.1.1#55
   84: 
   85: # If you want dnsmasq to change uid and gid to something other
   86: # than the default, edit the following lines.
   87: #user=
   88: #group=
   89: 
   90: # If you want dnsmasq to listen for DHCP and DNS requests only on
   91: # specified interfaces (and the loopback) give the name of the
   92: # interface (eg eth0) here.
   93: # Repeat the line for more than one interface.
   94: #interface=
   95: # Or you can specify which interface _not_ to listen on
   96: #except-interface=
   97: # Or which to listen on by address (remember to include 127.0.0.1 if
   98: # you use this.)
   99: #listen-address=
  100: # If you want dnsmasq to provide only DNS service on an interface,
  101: # configure it as shown above, and then use the following line to
  102: # disable DHCP and TFTP on it.
  103: #no-dhcp-interface=
  104: 
  105: # On systems which support it, dnsmasq binds the wildcard address,
  106: # even when it is listening on only some interfaces. It then discards
  107: # requests that it shouldn't reply to. This has the advantage of
  108: # working even when interfaces come and go and change address. If you
  109: # want dnsmasq to really bind only the interfaces it is listening on,
  110: # uncomment this option. About the only time you may need this is when
  111: # running another nameserver on the same machine.
  112: #bind-interfaces
  113: 
  114: # If you don't want dnsmasq to read /etc/hosts, uncomment the
  115: # following line.
  116: #no-hosts
  117: # or if you want it to read another file, as well as /etc/hosts, use
  118: # this.
  119: #addn-hosts=/etc/banner_add_hosts
  120: 
  121: # Set this (and domain: see below) if you want to have a domain
  122: # automatically added to simple names in a hosts-file.
  123: #expand-hosts
  124: 
  125: # Set the domain for dnsmasq. this is optional, but if it is set, it
  126: # does the following things.
  127: # 1) Allows DHCP hosts to have fully qualified domain names, as long
  128: #     as the domain part matches this setting.
  129: # 2) Sets the "domain" DHCP option thereby potentially setting the
  130: #    domain of all systems configured by DHCP
  131: # 3) Provides the domain part for "expand-hosts"
  132: #domain=thekelleys.org.uk
  133: 
  134: # Set a different domain for a particular subnet
  135: #domain=wireless.thekelleys.org.uk,192.168.2.0/24
  136: 
  137: # Same idea, but range rather then subnet
  138: #domain=reserved.thekelleys.org.uk,192.68.3.100,192.168.3.200
  139: 
  140: # Uncomment this to enable the integrated DHCP server, you need
  141: # to supply the range of addresses available for lease and optionally
  142: # a lease time. If you have more than one network, you will need to
  143: # repeat this for each network on which you want to supply DHCP
  144: # service.
  145: #dhcp-range=192.168.0.50,192.168.0.150,12h
  146: 
  147: # This is an example of a DHCP range where the netmask is given. This
  148: # is needed for networks we reach the dnsmasq DHCP server via a relay
  149: # agent. If you don't know what a DHCP relay agent is, you probably
  150: # don't need to worry about this.
  151: #dhcp-range=192.168.0.50,192.168.0.150,255.255.255.0,12h
  152: 
  153: # This is an example of a DHCP range which sets a tag, so that
  154: # some DHCP options may be set only for this network.
  155: #dhcp-range=set:red,192.168.0.50,192.168.0.150
  156: 
  157: # Use this DHCP range only when the tag "green" is set.
  158: #dhcp-range=tag:green,192.168.0.50,192.168.0.150,12h
  159: 
  160: # Specify a subnet which can't be used for dynamic address allocation,
  161: # is available for hosts with matching --dhcp-host lines. Note that
  162: # dhcp-host declarations will be ignored unless there is a dhcp-range
  163: # of some type for the subnet in question.
  164: # In this case the netmask is implied (it comes from the network
  165: # configuration on the machine running dnsmasq) it is possible to give
  166: # an explicit netmask instead.
  167: #dhcp-range=192.168.0.0,static
  168: 
  169: # Enable DHCPv6. Note that the prefix-length does not need to be specified
  170: # and defaults to 64 if missing/
  171: #dhcp-range=1234::2, 1234::500, 64, 12h
  172: 
  173: # Do Router Advertisements, BUT NOT DHCP for this subnet.
  174: #dhcp-range=1234::, ra-only 
  175: 
  176: # Do Router Advertisements, BUT NOT DHCP for this subnet, also try and
  177: # add names to the DNS for the IPv6 address of SLAAC-configured dual-stack 
  178: # hosts. Use the DHCPv4 lease to derive the name, network segment and 
  179: # MAC address and assume that the host will also have an
  180: # IPv6 address calculated using the SLAAC alogrithm.
  181: #dhcp-range=1234::, ra-names
  182: 
  183: # Do Router Advertisements, BUT NOT DHCP for this subnet.
  184: # Set the lifetime to 46 hours. (Note: minimum lifetime is 2 hours.)
  185: #dhcp-range=1234::, ra-only, 48h
  186: 
  187: # Do DHCP and Router Advertisements for this subnet. Set the A bit in the RA
  188: # so that clients can use SLAAC addresses as well as DHCP ones.
  189: #dhcp-range=1234::2, 1234::500, slaac
  190: 
  191: # Do Router Advertisements and stateless DHCP for this subnet. Clients will
  192: # not get addresses from DHCP, but they will get other configuration information.
  193: # They will use SLAAC for addresses.
  194: #dhcp-range=1234::, ra-stateless
  195: 
  196: # Do stateless DHCP, SLAAC, and generate DNS names for SLAAC addresses
  197: # from DHCPv4 leases.
  198: #dhcp-range=1234::, ra-stateless, ra-names
  199: 
  200: # Do router advertisements for all subnets where we're doing DHCPv6
  201: # Unless overriden by ra-stateless, ra-names, et al, the router 
  202: # advertisements will have the M and O bits set, so that the clients
  203: # get addresses and configuration from DHCPv6, and the A bit reset, so the 
  204: # clients don't use SLAAC addresses.
  205: #enable-ra
  206: 
  207: # Supply parameters for specified hosts using DHCP. There are lots
  208: # of valid alternatives, so we will give examples of each. Note that
  209: # IP addresses DO NOT have to be in the range given above, they just
  210: # need to be on the same network. The order of the parameters in these
  211: # do not matter, it's permissible to give name, address and MAC in any
  212: # order.
  213: 
  214: # Always allocate the host with Ethernet address 11:22:33:44:55:66
  215: # The IP address 192.168.0.60
  216: #dhcp-host=11:22:33:44:55:66,192.168.0.60
  217: 
  218: # Always set the name of the host with hardware address
  219: # 11:22:33:44:55:66 to be "fred"
  220: #dhcp-host=11:22:33:44:55:66,fred
  221: 
  222: # Always give the host with Ethernet address 11:22:33:44:55:66
  223: # the name fred and IP address 192.168.0.60 and lease time 45 minutes
  224: #dhcp-host=11:22:33:44:55:66,fred,192.168.0.60,45m
  225: 
  226: # Give a host with Ethernet address 11:22:33:44:55:66 or
  227: # 12:34:56:78:90:12 the IP address 192.168.0.60. Dnsmasq will assume
  228: # that these two Ethernet interfaces will never be in use at the same
  229: # time, and give the IP address to the second, even if it is already
  230: # in use by the first. Useful for laptops with wired and wireless
  231: # addresses.
  232: #dhcp-host=11:22:33:44:55:66,12:34:56:78:90:12,192.168.0.60
  233: 
  234: # Give the machine which says its name is "bert" IP address
  235: # 192.168.0.70 and an infinite lease
  236: #dhcp-host=bert,192.168.0.70,infinite
  237: 
  238: # Always give the host with client identifier 01:02:02:04
  239: # the IP address 192.168.0.60
  240: #dhcp-host=id:01:02:02:04,192.168.0.60
  241: 
  242: # Always give the host with client identifier "marjorie"
  243: # the IP address 192.168.0.60
  244: #dhcp-host=id:marjorie,192.168.0.60
  245: 
  246: # Enable the address given for "judge" in /etc/hosts
  247: # to be given to a machine presenting the name "judge" when
  248: # it asks for a DHCP lease.
  249: #dhcp-host=judge
  250: 
  251: # Never offer DHCP service to a machine whose Ethernet
  252: # address is 11:22:33:44:55:66
  253: #dhcp-host=11:22:33:44:55:66,ignore
  254: 
  255: # Ignore any client-id presented by the machine with Ethernet
  256: # address 11:22:33:44:55:66. This is useful to prevent a machine
  257: # being treated differently when running under different OS's or
  258: # between PXE boot and OS boot.
  259: #dhcp-host=11:22:33:44:55:66,id:*
  260: 
  261: # Send extra options which are tagged as "red" to
  262: # the machine with Ethernet address 11:22:33:44:55:66
  263: #dhcp-host=11:22:33:44:55:66,set:red
  264: 
  265: # Send extra options which are tagged as "red" to
  266: # any machine with Ethernet address starting 11:22:33:
  267: #dhcp-host=11:22:33:*:*:*,set:red
  268: 
  269: # Give a fixed IPv6 address and name to client with 
  270: # DUID 00:01:00:01:16:d2:83:fc:92:d4:19:e2:d8:b2
  271: # Note the MAC addresses CANNOT be used to identify DHCPv6 clients.
  272: # Note also the they [] around the IPv6 address are obilgatory.
  273: #dhcp-host=id:00:01:00:01:16:d2:83:fc:92:d4:19:e2:d8:b2, fred, [1234::5] 
  274: 
  275: # Ignore any clients which are not specified in dhcp-host lines
  276: # or /etc/ethers. Equivalent to ISC "deny unknown-clients".
  277: # This relies on the special "known" tag which is set when
  278: # a host is matched.
  279: #dhcp-ignore=tag:!known
  280: 
  281: # Send extra options which are tagged as "red" to any machine whose
  282: # DHCP vendorclass string includes the substring "Linux"
  283: #dhcp-vendorclass=set:red,Linux
  284: 
  285: # Send extra options which are tagged as "red" to any machine one
  286: # of whose DHCP userclass strings includes the substring "accounts"
  287: #dhcp-userclass=set:red,accounts
  288: 
  289: # Send extra options which are tagged as "red" to any machine whose
  290: # MAC address matches the pattern.
  291: #dhcp-mac=set:red,00:60:8C:*:*:*
  292: 
  293: # If this line is uncommented, dnsmasq will read /etc/ethers and act
  294: # on the ethernet-address/IP pairs found there just as if they had
  295: # been given as --dhcp-host options. Useful if you keep
  296: # MAC-address/host mappings there for other purposes.
  297: #read-ethers
  298: 
  299: # Send options to hosts which ask for a DHCP lease.
  300: # See RFC 2132 for details of available options.
  301: # Common options can be given to dnsmasq by name:
  302: # run "dnsmasq --help dhcp" to get a list.
  303: # Note that all the common settings, such as netmask and
  304: # broadcast address, DNS server and default route, are given
  305: # sane defaults by dnsmasq. You very likely will not need
  306: # any dhcp-options. If you use Windows clients and Samba, there
  307: # are some options which are recommended, they are detailed at the
  308: # end of this section.
  309: 
  310: # Override the default route supplied by dnsmasq, which assumes the
  311: # router is the same machine as the one running dnsmasq.
  312: #dhcp-option=3,1.2.3.4
  313: 
  314: # Do the same thing, but using the option name
  315: #dhcp-option=option:router,1.2.3.4
  316: 
  317: # Override the default route supplied by dnsmasq and send no default
  318: # route at all. Note that this only works for the options sent by
  319: # default (1, 3, 6, 12, 28) the same line will send a zero-length option
  320: # for all other option numbers.
  321: #dhcp-option=3
  322: 
  323: # Set the NTP time server addresses to 192.168.0.4 and 10.10.0.5
  324: #dhcp-option=option:ntp-server,192.168.0.4,10.10.0.5
  325: 
  326: # Send DHCPv6 option. Note [] around IPv6 addresses.
  327: #dhcp-option=option6:dns-server,[1234::77],[1234::88]
  328: 
  329: # Send DHCPv6 option for namservers as the machine running 
  330: # dnsmasq and another.
  331: #dhcp-option=option6:dns-server,[::],[1234::88]
  332: 
  333: # Ask client to poll for option changes every six hours. (RFC4242)
  334: #dhcp-option=option6:information-refresh-time,6h
  335: 
  336: # Set the NTP time server address to be the same machine as
  337: # is running dnsmasq
  338: #dhcp-option=42,0.0.0.0
  339: 
  340: # Set the NIS domain name to "welly"
  341: #dhcp-option=40,welly
  342: 
  343: # Set the default time-to-live to 50
  344: #dhcp-option=23,50
  345: 
  346: # Set the "all subnets are local" flag
  347: #dhcp-option=27,1
  348: 
  349: # Send the etherboot magic flag and then etherboot options (a string).
  350: #dhcp-option=128,e4:45:74:68:00:00
  351: #dhcp-option=129,NIC=eepro100
  352: 
  353: # Specify an option which will only be sent to the "red" network
  354: # (see dhcp-range for the declaration of the "red" network)
  355: # Note that the tag: part must precede the option: part.
  356: #dhcp-option = tag:red, option:ntp-server, 192.168.1.1
  357: 
  358: # The following DHCP options set up dnsmasq in the same way as is specified
  359: # for the ISC dhcpcd in
  360: # http://www.samba.org/samba/ftp/docs/textdocs/DHCP-Server-Configuration.txt
  361: # adapted for a typical dnsmasq installation where the host running
  362: # dnsmasq is also the host running samba.
  363: # you may want to uncomment some or all of them if you use
  364: # Windows clients and Samba.
  365: #dhcp-option=19,0           # option ip-forwarding off
  366: #dhcp-option=44,0.0.0.0     # set netbios-over-TCP/IP nameserver(s) aka WINS server(s)
  367: #dhcp-option=45,0.0.0.0     # netbios datagram distribution server
  368: #dhcp-option=46,8           # netbios node type
  369: 
  370: # Send an empty WPAD option. This may be REQUIRED to get windows 7 to behave.
  371: #dhcp-option=252,"\n"
  372: 
  373: # Send RFC-3397 DNS domain search DHCP option. WARNING: Your DHCP client
  374: # probably doesn't support this......
  375: #dhcp-option=option:domain-search,eng.apple.com,marketing.apple.com
  376: 
  377: # Send RFC-3442 classless static routes (note the netmask encoding)
  378: #dhcp-option=121,192.168.1.0/24,1.2.3.4,10.0.0.0/8,5.6.7.8
  379: 
  380: # Send vendor-class specific options encapsulated in DHCP option 43.
  381: # The meaning of the options is defined by the vendor-class so
  382: # options are sent only when the client supplied vendor class
  383: # matches the class given here. (A substring match is OK, so "MSFT"
  384: # matches "MSFT" and "MSFT 5.0"). This example sets the
  385: # mtftp address to 0.0.0.0 for PXEClients.
  386: #dhcp-option=vendor:PXEClient,1,0.0.0.0
  387: 
  388: # Send microsoft-specific option to tell windows to release the DHCP lease
  389: # when it shuts down. Note the "i" flag, to tell dnsmasq to send the
  390: # value as a four-byte integer - that's what microsoft wants. See
  391: # http://technet2.microsoft.com/WindowsServer/en/library/a70f1bb7-d2d4-49f0-96d6-4b7414ecfaae1033.mspx?mfr=true
  392: #dhcp-option=vendor:MSFT,2,1i
  393: 
  394: # Send the Encapsulated-vendor-class ID needed by some configurations of
  395: # Etherboot to allow is to recognise the DHCP server.
  396: #dhcp-option=vendor:Etherboot,60,"Etherboot"
  397: 
  398: # Send options to PXELinux. Note that we need to send the options even
  399: # though they don't appear in the parameter request list, so we need
  400: # to use dhcp-option-force here.
  401: # See http://syslinux.zytor.com/pxe.php#special for details.
  402: # Magic number - needed before anything else is recognised
  403: #dhcp-option-force=208,f1:00:74:7e
  404: # Configuration file name
  405: #dhcp-option-force=209,configs/common
  406: # Path prefix
  407: #dhcp-option-force=210,/tftpboot/pxelinux/files/
  408: # Reboot time. (Note 'i' to send 32-bit value)
  409: #dhcp-option-force=211,30i
  410: 
  411: # Set the boot filename for netboot/PXE. You will only need
  412: # this is you want to boot machines over the network and you will need
  413: # a TFTP server; either dnsmasq's built in TFTP server or an
  414: # external one. (See below for how to enable the TFTP server.)
  415: #dhcp-boot=pxelinux.0
  416: 
  417: # The same as above, but use custom tftp-server instead machine running dnsmasq
  418: #dhcp-boot=pxelinux,server.name,192.168.1.100
  419: 
  420: # Boot for Etherboot gPXE. The idea is to send two different
  421: # filenames, the first loads gPXE, and the second tells gPXE what to
  422: # load. The dhcp-match sets the gpxe tag for requests from gPXE.
  423: #dhcp-match=set:gpxe,175 # gPXE sends a 175 option.
  424: #dhcp-boot=tag:!gpxe,undionly.kpxe
  425: #dhcp-boot=mybootimage
  426: 
  427: # Encapsulated options for Etherboot gPXE. All the options are
  428: # encapsulated within option 175
  429: #dhcp-option=encap:175, 1, 5b         # priority code
  430: #dhcp-option=encap:175, 176, 1b       # no-proxydhcp
  431: #dhcp-option=encap:175, 177, string   # bus-id
  432: #dhcp-option=encap:175, 189, 1b       # BIOS drive code
  433: #dhcp-option=encap:175, 190, user     # iSCSI username
  434: #dhcp-option=encap:175, 191, pass     # iSCSI password
  435: 
  436: # Test for the architecture of a netboot client. PXE clients are
  437: # supposed to send their architecture as option 93. (See RFC 4578)
  438: #dhcp-match=peecees, option:client-arch, 0 #x86-32
  439: #dhcp-match=itanics, option:client-arch, 2 #IA64
  440: #dhcp-match=hammers, option:client-arch, 6 #x86-64
  441: #dhcp-match=mactels, option:client-arch, 7 #EFI x86-64
  442: 
  443: # Do real PXE, rather than just booting a single file, this is an
  444: # alternative to dhcp-boot.
  445: #pxe-prompt="What system shall I netboot?"
  446: # or with timeout before first available action is taken:
  447: #pxe-prompt="Press F8 for menu.", 60
  448: 
  449: # Available boot services. for PXE.
  450: #pxe-service=x86PC, "Boot from local disk"
  451: 
  452: # Loads <tftp-root>/pxelinux.0 from dnsmasq TFTP server.
  453: #pxe-service=x86PC, "Install Linux", pxelinux
  454: 
  455: # Loads <tftp-root>/pxelinux.0 from TFTP server at 1.2.3.4.
  456: # Beware this fails on old PXE ROMS.
  457: #pxe-service=x86PC, "Install Linux", pxelinux, 1.2.3.4
  458: 
  459: # Use bootserver on network, found my multicast or broadcast.
  460: #pxe-service=x86PC, "Install windows from RIS server", 1
  461: 
  462: # Use bootserver at a known IP address.
  463: #pxe-service=x86PC, "Install windows from RIS server", 1, 1.2.3.4
  464: 
  465: # If you have multicast-FTP available,
  466: # information for that can be passed in a similar way using options 1
  467: # to 5. See page 19 of
  468: # http://download.intel.com/design/archives/wfm/downloads/pxespec.pdf
  469: 
  470: 
  471: # Enable dnsmasq's built-in TFTP server
  472: #enable-tftp
  473: 
  474: # Set the root directory for files available via FTP.
  475: #tftp-root=/var/ftpd
  476: 
  477: # Make the TFTP server more secure: with this set, only files owned by
  478: # the user dnsmasq is running as will be send over the net.
  479: #tftp-secure
  480: 
  481: # This option stops dnsmasq from negotiating a larger blocksize for TFTP
  482: # transfers. It will slow things down, but may rescue some broken TFTP
  483: # clients.
  484: #tftp-no-blocksize
  485: 
  486: # Set the boot file name only when the "red" tag is set.
  487: #dhcp-boot=tag:red,pxelinux.red-net
  488: 
  489: # An example of dhcp-boot with an external TFTP server: the name and IP
  490: # address of the server are given after the filename.
  491: # Can fail with old PXE ROMS. Overridden by --pxe-service.
  492: #dhcp-boot=/var/ftpd/pxelinux.0,boothost,192.168.0.3
  493: 
  494: # If there are multiple external tftp servers having a same name
  495: # (using /etc/hosts) then that name can be specified as the
  496: # tftp_servername (the third option to dhcp-boot) and in that
  497: # case dnsmasq resolves this name and returns the resultant IP
  498: # addresses in round robin fasion. This facility can be used to
  499: # load balance the tftp load among a set of servers.
  500: #dhcp-boot=/var/ftpd/pxelinux.0,boothost,tftp_server_name
  501: 
  502: # Set the limit on DHCP leases, the default is 150
  503: #dhcp-lease-max=150
  504: 
  505: # The DHCP server needs somewhere on disk to keep its lease database.
  506: # This defaults to a sane location, but if you want to change it, use
  507: # the line below.
  508: #dhcp-leasefile=/var/lib/misc/dnsmasq.leases
  509: 
  510: # Set the DHCP server to authoritative mode. In this mode it will barge in
  511: # and take over the lease for any client which broadcasts on the network,
  512: # whether it has a record of the lease or not. This avoids long timeouts
  513: # when a machine wakes up on a new network. DO NOT enable this if there's
  514: # the slightest chance that you might end up accidentally configuring a DHCP
  515: # server for your campus/company accidentally. The ISC server uses
  516: # the same option, and this URL provides more information:
  517: # http://www.isc.org/files/auth.html
  518: #dhcp-authoritative
  519: 
  520: # Run an executable when a DHCP lease is created or destroyed.
  521: # The arguments sent to the script are "add" or "del",
  522: # then the MAC address, the IP address and finally the hostname
  523: # if there is one.
  524: #dhcp-script=/bin/echo
  525: 
  526: # Set the cachesize here.
  527: #cache-size=150
  528: 
  529: # If you want to disable negative caching, uncomment this.
  530: #no-negcache
  531: 
  532: # Normally responses which come from /etc/hosts and the DHCP lease
  533: # file have Time-To-Live set as zero, which conventionally means
  534: # do not cache further. If you are happy to trade lower load on the
  535: # server for potentially stale date, you can set a time-to-live (in
  536: # seconds) here.
  537: #local-ttl=
  538: 
  539: # If you want dnsmasq to detect attempts by Verisign to send queries
  540: # to unregistered .com and .net hosts to its sitefinder service and
  541: # have dnsmasq instead return the correct NXDOMAIN response, uncomment
  542: # this line. You can add similar lines to do the same for other
  543: # registries which have implemented wildcard A records.
  544: #bogus-nxdomain=64.94.110.11
  545: 
  546: # If you want to fix up DNS results from upstream servers, use the
  547: # alias option. This only works for IPv4.
  548: # This alias makes a result of 1.2.3.4 appear as 5.6.7.8
  549: #alias=1.2.3.4,5.6.7.8
  550: # and this maps 1.2.3.x to 5.6.7.x
  551: #alias=1.2.3.0,5.6.7.0,255.255.255.0
  552: # and this maps 192.168.0.10->192.168.0.40 to 10.0.0.10->10.0.0.40
  553: #alias=192.168.0.10-192.168.0.40,10.0.0.0,255.255.255.0
  554: 
  555: # Change these lines if you want dnsmasq to serve MX records.
  556: 
  557: # Return an MX record named "maildomain.com" with target
  558: # servermachine.com and preference 50
  559: #mx-host=maildomain.com,servermachine.com,50
  560: 
  561: # Set the default target for MX records created using the localmx option.
  562: #mx-target=servermachine.com
  563: 
  564: # Return an MX record pointing to the mx-target for all local
  565: # machines.
  566: #localmx
  567: 
  568: # Return an MX record pointing to itself for all local machines.
  569: #selfmx
  570: 
  571: # Change the following lines if you want dnsmasq to serve SRV
  572: # records.  These are useful if you want to serve ldap requests for
  573: # Active Directory and other windows-originated DNS requests.
  574: # See RFC 2782.
  575: # You may add multiple srv-host lines.
  576: # The fields are <name>,<target>,<port>,<priority>,<weight>
  577: # If the domain part if missing from the name (so that is just has the
  578: # service and protocol sections) then the domain given by the domain=
  579: # config option is used. (Note that expand-hosts does not need to be
  580: # set for this to work.)
  581: 
  582: # A SRV record sending LDAP for the example.com domain to
  583: # ldapserver.example.com port 389
  584: #srv-host=_ldap._tcp.example.com,ldapserver.example.com,389
  585: 
  586: # A SRV record sending LDAP for the example.com domain to
  587: # ldapserver.example.com port 389 (using domain=)
  588: #domain=example.com
  589: #srv-host=_ldap._tcp,ldapserver.example.com,389
  590: 
  591: # Two SRV records for LDAP, each with different priorities
  592: #srv-host=_ldap._tcp.example.com,ldapserver.example.com,389,1
  593: #srv-host=_ldap._tcp.example.com,ldapserver.example.com,389,2
  594: 
  595: # A SRV record indicating that there is no LDAP server for the domain
  596: # example.com
  597: #srv-host=_ldap._tcp.example.com
  598: 
  599: # The following line shows how to make dnsmasq serve an arbitrary PTR
  600: # record. This is useful for DNS-SD. (Note that the
  601: # domain-name expansion done for SRV records _does_not
  602: # occur for PTR records.)
  603: #ptr-record=_http._tcp.dns-sd-services,"New Employee Page._http._tcp.dns-sd-services"
  604: 
  605: # Change the following lines to enable dnsmasq to serve TXT records.
  606: # These are used for things like SPF and zeroconf. (Note that the
  607: # domain-name expansion done for SRV records _does_not
  608: # occur for TXT records.)
  609: 
  610: #Example SPF.
  611: #txt-record=example.com,"v=spf1 a -all"
  612: 
  613: #Example zeroconf
  614: #txt-record=_http._tcp.example.com,name=value,paper=A4
  615: 
  616: # Provide an alias for a "local" DNS name. Note that this _only_ works
  617: # for targets which are names from DHCP or /etc/hosts. Give host
  618: # "bert" another name, bertrand
  619: #cname=bertand,bert
  620: 
  621: # For debugging purposes, log each DNS query as it passes through
  622: # dnsmasq.
  623: #log-queries
  624: 
  625: # Log lots of extra information about DHCP transactions.
  626: #log-dhcp
  627: 
  628: # Include another lot of configuration options.
  629: #conf-file=/etc/dnsmasq.more.conf
  630: #conf-dir=/etc/dnsmasq.d

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