Merge quagga mainline into the google ISIS code.

The steps were:

  $ git checkout google-is-is
  $ git merge quagga
  $ git checkout google-is-is -- isisd

  # Resolve conflicts in the following:
  lib/md5.h
  zebra/rt_netlink.c
  zebra/zebra_rib.c
  zebra/zserv.c

Note that the content in the isisd directory is left unchanged in the
merge. As a result, changes made to isisd as part of the following
commits on the quagga mainline are dropped.

  # 8ced4e82 is the merge base, e96b3121 is the current quagga master
  $ git log --oneline --reverse 8ced4e82..e96b3121 -- isisd
  5574999 isisd: fix crash on "no router isis" (BZ#536)
  8998075 isisd: raise hello rate for DIS (BZ#539)
  306ca83 isisd: include hash.h, not hash.c
  b82cdeb delete CVS keywords
  2f65867 isisd: indent longopts array
  b511468 quagga: option "-z" ("--socket <path>") added
  05e54ee build: delete .cvsignore files
  b4e45f6 fix zebra protocol after MP-BGP changes
  7fd6cd8 isisd: fix circuit state machine
  907fd95 isisd: send proper LSP after DIS election
  d034aa0 isisd: fix wrong next-hops from SPF
  c25eaff isisd: unexpected kernel routing table (BZ#544)
  e6b03b7 isisd: implement MD5 circuit authentication

1 files changed, 33 insertions, 21 deletions

diff --git a/doc/ipv6.texi b/doc/ipv6.texi
index a78a92fe..b6cc4376 100644
--- a/doc/ipv6.texi
+++ b/doc/ipv6.texi
@@ -2,7 +2,7 @@
 @chapter IPv6 Support
 
 Quagga fully supports IPv6 routing.  As described so far, Quagga supports
-RIPng, OSPFv3 and BGP-4+.  You can give IPv6 addresses to an interface
+RIPng, OSPFv3, Babel and BGP-4+.  You can give IPv6 addresses to an interface
 and configure static IPv6 routing information.  Quagga IPv6 also provides
 automatic address configuration via a feature called @code{address
 auto configuration}.  To do it, the router must send router advertisement
@@ -62,23 +62,24 @@ Default: not set, i.e. hosts do not assume a complete IP address is placed.
 @end itemize
 @end deffn
 
-@deffn {Interface Command} {ipv6 nd ra-interval SECONDS} {}
-@deffnx {Interface Command} {no ipv6 nd ra-interval} {}
+@deffn {Interface Command} {ipv6 nd ra-interval <1-1800>} {}
+@deffnx {Interface Command} {no ipv6 nd ra-interval [<1-1800>]} {}
 The  maximum  time allowed between sending unsolicited multicast router
-advertisements from the interface, in seconds. Must be no less than 3 seconds.
+advertisements from the interface, in seconds.
 
 Default: @code{600}
 @end deffn
 
-@deffn {Interface Command} {ipv6 nd ra-interval msec MILLISECONDS} {}
-@deffnx {Interface Command} {no ipv6 nd ra-interval msec} {}
+@deffn {Interface Command} {ipv6 nd ra-interval msec <70-1800000>} {}
+@deffnx {Interface Command} {no ipv6 nd ra-interval [msec <70-1800000>]} {}
 The  maximum  time allowed between sending unsolicited multicast router
-advertisements from the interface, in milliseconds. Must be no less than 30 milliseconds.
+advertisements from the interface, in milliseconds.
 
 Default: @code{600000}
 @end deffn
-@deffn {Interface Command} {ipv6 nd ra-lifetime SECONDS} {}
-@deffnx {Interface Command} {no ipv6 nd ra-lifetime} {}
+
+@deffn {Interface Command} {ipv6 nd ra-lifetime <0-9000>} {}
+@deffnx {Interface Command} {no ipv6 nd ra-lifetime [<0-9000>]} {}
 The value to be placed in the Router Lifetime field of router advertisements
 sent from the interface, in seconds. Indicates the usefulness of the router
 as a default router on this interface. Setting the value to zero indicates
@@ -89,12 +90,12 @@ Must be either zero or between value specified with @var{ipv6 nd ra-interval}
 Default: @code{1800}
 @end deffn
 
-@deffn {Interface Command} {ipv6 nd reachable-time MILLISECONDS} {}
-@deffnx {Interface Command} {no ipv6 nd reachable-time} {}
+@deffn {Interface Command} {ipv6 nd reachable-time <1-3600000>} {}
+@deffnx {Interface Command} {no ipv6 nd reachable-time [<1-3600000>]} {}
 The value to be placed in the Reachable Time field in the Router Advertisement
 messages sent by the router, in milliseconds. The configured time enables the
 router to detect unavailable neighbors. The value zero means unspecified (by
-this router). Must be no greater than @code{3,600,000} milliseconds (1 hour).
+this router).
 
 Default: @code{0}
 @end deffn
@@ -126,18 +127,20 @@ the router acts as a Home Agent and includes a Home Agent Option.
 Default: not set
 @end deffn
 
-@deffn {Interface Command} {ipv6 nd home-agent-preference} {}
-@deffnx {Interface Command} {no ipv6 nd home-agent-preference} {}
+@deffn {Interface Command} {ipv6 nd home-agent-preference <0-65535>} {}
+@deffnx {Interface Command} {no ipv6 nd home-agent-preference [<0-65535>]} {}
 The value to be placed in Home Agent Option, when Home Agent config flag is set, 
-which indicates to hosts Home Agent preference.
+which indicates to hosts Home Agent preference. The default value of 0 stands
+for the lowest preference possible.
 
 Default: 0
 @end deffn
 
-@deffn {Interface Command} {ipv6 nd home-agent-lifetime} {}
-@deffnx {Interface Command} {no ipv6 nd home-agent-lifetime} {}
++@deffn {Interface Command} {ipv6 nd home-agent-lifetime <0-65520>} {}
++@deffnx {Interface Command} {no ipv6 nd home-agent-lifetime [<0-65520>]} {}
 The value to be placed in Home Agent Option, when Home Agent config flag is set, 
-which indicates to hosts Home Agent Lifetime. A value of 0 means to place Router Lifetime value.
+which indicates to hosts Home Agent Lifetime. The default value of 0 means to
+place the current Router Lifetime value.
 
 Default: 0
 @end deffn
@@ -151,12 +154,21 @@ Default: not set
 @end deffn
 
 @deffn {Interface Command} {ipv6 nd router-preference (high|medium|low)} {}
-@deffnx {Interface Command} {no ipv6 nd router-preference} {}
+@deffnx {Interface Command} {no ipv6 nd router-preference [(high|medium|low)]} {}
 Set default router preference in IPv6 router advertisements per RFC4191.
 
 Default: medium
 @end deffn
 
+@deffn {Interface Command} {ipv6 nd mtu <1-65535>} {}
+@deffnx {Interface Command} {no ipv6 nd mtu [<1-65535>]} {}
+Include an MTU (type 5) option in each RA packet to assist the attached hosts
+in proper interface configuration. The announced value is not verified to be
+consistent with router interface MTU.
+
+Default: don't advertise any MTU option
+@end deffn
+
 @example
 @group
 interface eth0
@@ -166,6 +178,6 @@ interface eth0
 @end example
 
 For more information see @cite{RFC2462 (IPv6 Stateless Address Autoconfiguration)}
-, @cite{RFC2461 (Neighbor Discovery for IP Version 6 (IPv6))}
-, @cite{RFC3775 (Mobility Support in IPv6 (Mobile IPv6))}
+, @cite{RFC4861 (Neighbor Discovery for IP Version 6 (IPv6))}
+, @cite{RFC6275 (Mobility Support in IPv6)}
 and @cite{RFC4191 (Default Router Preferences and More-Specific Routes)}.