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    1: @node IPv6 Support
    2: @chapter IPv6 Support
    3: 
    4: Quagga fully supports IPv6 routing.  As described so far, Quagga supports
    5: RIPng, OSPFv3 and BGP-4+.  You can give IPv6 addresses to an interface
    6: and configure static IPv6 routing information.  Quagga IPv6 also provides
    7: automatic address configuration via a feature called @code{address
    8: auto configuration}.  To do it, the router must send router advertisement
    9: messages to the all nodes that exist on the network.
   10: 
   11: @menu
   12: * Router Advertisement::        
   13: @end menu
   14: 
   15: @node Router Advertisement
   16: @section Router Advertisement
   17: 
   18: @deffn {Interface Command} {no ipv6 nd suppress-ra} {}
   19: Send router advertisment messages.
   20: @end deffn
   21: 
   22: @deffn {Interface Command} {ipv6 nd suppress-ra} {}
   23: Don't send router advertisment messages.
   24: @end deffn
   25: 
   26: @deffn {Interface Command} {ipv6 nd prefix @var{ipv6prefix} [@var{valid-lifetime}] [@var{preferred-lifetime}] [off-link] [no-autoconfig] [router-address]} {}
   27: Configuring the IPv6 prefix to include in router advertisements. Several prefix
   28: specific optional parameters and flags may follow:
   29: @itemize @bullet
   30: @item
   31: @var{valid-lifetime} - the length of time in seconds during what the prefix is
   32: valid for the purpose of on-link determination. Value @var{infinite} represents
   33: infinity (i.e. a value of all one bits (@code{0xffffffff})).
   34: 
   35: Range: @code{<0-4294967295>}  Default: @code{2592000}
   36: 
   37: @item
   38: @var{preferred-lifetime} - the length of time in seconds during what addresses
   39: generated from the prefix remain preferred. Value @var{infinite} represents
   40: infinity.
   41: 
   42: Range: @code{<0-4294967295>}  Default: @code{604800}
   43: 
   44: @item
   45: @var{off-link} - indicates that advertisement makes no statement about on-link or
   46: off-link properties of the prefix.
   47: 
   48: Default: not set, i.e. this prefix can be used for on-link determination.
   49: 
   50: @item
   51: @var{no-autoconfig} - indicates to hosts on the local link that the specified prefix
   52: cannot be used for IPv6 autoconfiguration.
   53: 
   54: Default: not set, i.e. prefix can be used for autoconfiguration.
   55: 
   56: @item
   57: @var{router-address} - indicates to hosts on the local link that the specified 
   58: prefix 
   59: contains a complete IP address by setting R flag.
   60: 
   61: Default: not set, i.e. hosts do not assume a complete IP address is placed.
   62: @end itemize
   63: @end deffn
   64: 
   65: @deffn {Interface Command} {ipv6 nd ra-interval SECONDS} {}
   66: @deffnx {Interface Command} {no ipv6 nd ra-interval} {}
   67: The  maximum  time allowed between sending unsolicited multicast router
   68: advertisements from the interface, in seconds. Must be no less than 3 seconds.
   69: 
   70: Default: @code{600}
   71: @end deffn
   72: 
   73: @deffn {Interface Command} {ipv6 nd ra-interval msec MILLISECONDS} {}
   74: @deffnx {Interface Command} {no ipv6 nd ra-interval msec} {}
   75: The  maximum  time allowed between sending unsolicited multicast router
   76: advertisements from the interface, in milliseconds. Must be no less than 30 milliseconds.
   77: 
   78: Default: @code{600000}
   79: @end deffn
   80: @deffn {Interface Command} {ipv6 nd ra-lifetime SECONDS} {}
   81: @deffnx {Interface Command} {no ipv6 nd ra-lifetime} {}
   82: The value to be placed in the Router Lifetime field of router advertisements
   83: sent from the interface, in seconds. Indicates the usefulness of the router
   84: as a default router on this interface. Setting the value to zero indicates
   85: that the router should not be considered a default router on this interface.
   86: Must be either zero or between value specified with @var{ipv6 nd ra-interval}
   87: (or default) and 9000 seconds.
   88: 
   89: Default: @code{1800}
   90: @end deffn
   91: 
   92: @deffn {Interface Command} {ipv6 nd reachable-time MILLISECONDS} {}
   93: @deffnx {Interface Command} {no ipv6 nd reachable-time} {}
   94: The value to be placed in the Reachable Time field in the Router Advertisement
   95: messages sent by the router, in milliseconds. The configured time enables the
   96: router to detect unavailable neighbors. The value zero means unspecified (by
   97: this router). Must be no greater than @code{3,600,000} milliseconds (1 hour).
   98: 
   99: Default: @code{0}
  100: @end deffn
  101: 
  102: @deffn {Interface Command} {ipv6 nd managed-config-flag} {}
  103: @deffnx {Interface Command} {no ipv6 nd managed-config-flag} {}
  104: Set/unset flag in IPv6 router advertisements which indicates to hosts that they
  105: should use managed (stateful) protocol for addresses autoconfiguration in
  106: addition to any addresses autoconfigured using stateless address
  107: autoconfiguration.
  108: 
  109: Default: not set
  110: @end deffn
  111: 
  112: @deffn {Interface Command} {ipv6 nd other-config-flag} {}
  113: @deffnx {Interface Command} {no ipv6 nd other-config-flag} {}
  114: Set/unset flag in IPv6 router advertisements which indicates to hosts that
  115: they should use administered (stateful) protocol to obtain autoconfiguration
  116: information other than addresses.
  117: 
  118: Default: not set
  119: @end deffn
  120: 
  121: @deffn {Interface Command} {ipv6 nd home-agent-config-flag} {}
  122: @deffnx {Interface Command} {no ipv6 nd home-agent-config-flag} {}
  123: Set/unset flag in IPv6 router advertisements which indicates to hosts that
  124: the router acts as a Home Agent and includes a Home Agent Option.
  125: 
  126: Default: not set
  127: @end deffn
  128: 
  129: @deffn {Interface Command} {ipv6 nd home-agent-preference} {}
  130: @deffnx {Interface Command} {no ipv6 nd home-agent-preference} {}
  131: The value to be placed in Home Agent Option, when Home Agent config flag is set, 
  132: which indicates to hosts Home Agent preference.
  133: 
  134: Default: 0
  135: @end deffn
  136: 
  137: @deffn {Interface Command} {ipv6 nd home-agent-lifetime} {}
  138: @deffnx {Interface Command} {no ipv6 nd home-agent-lifetime} {}
  139: The value to be placed in Home Agent Option, when Home Agent config flag is set, 
  140: which indicates to hosts Home Agent Lifetime. A value of 0 means to place Router Lifetime value.
  141: 
  142: Default: 0
  143: @end deffn
  144: 
  145: @deffn {Interface Command} {ipv6 nd adv-interval-option} {}
  146: @deffnx {Interface Command} {no ipv6 nd adv-interval-option} {}
  147: Include an Advertisement Interval option which indicates to hosts the maximum time, 
  148: in milliseconds, between successive unsolicited Router Advertisements.
  149: 
  150: Default: not set
  151: @end deffn
  152: 
  153: @deffn {Interface Command} {ipv6 nd router-preference (high|medium|low)} {}
  154: @deffnx {Interface Command} {no ipv6 nd router-preference} {}
  155: Set default router preference in IPv6 router advertisements per RFC4191.
  156: 
  157: Default: medium
  158: @end deffn
  159: 
  160: @example
  161: @group
  162: interface eth0
  163:  no ipv6 nd suppress-ra
  164:  ipv6 nd prefix 2001:0DB8:5009::/64
  165: @end group
  166: @end example
  167: 
  168: For more information see @cite{RFC2462 (IPv6 Stateless Address Autoconfiguration)}
  169: , @cite{RFC2461 (Neighbor Discovery for IP Version 6 (IPv6))}
  170: , @cite{RFC3775 (Mobility Support in IPv6 (Mobile IPv6))}
  171: and @cite{RFC4191 (Default Router Preferences and More-Specific Routes)}.