[Bug 263982] IPv6 Router Advertisement - Route Information Option

From: <bugzilla-noreply_at_freebsd.org>
Date: Sun, 15 May 2022 11:45:51 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=263982

            Bug ID: 263982
           Summary: IPv6 Router Advertisement - Route Information Option
           Product: Base System
           Version: 13.0-RELEASE
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: kern
          Assignee: bugs@FreeBSD.org
          Reporter: filipe@zarco.org

The ICMPv6 Router Advertisement messages with Route Information Option (option
24) are ignored by the kernel, as shown by the following debug message.

 nd6_options: unsupported option 24 - option ignored

This causes the specific routes sent by routers not being added to the system
routing table.

Is it possible to support this option in FreeBSD kernel? It's defined in
RFC4191 and supported in other OS such as Linux, Windows, macOS...

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