[Bug 266544] Cannot send to static ipv6 interface routes

From: <bugzilla-noreply_at_freebsd.org>
Date: Fri, 23 Sep 2022 09:07:24 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=266544

--- Comment #2 from Sam Frenick <jaunts_buys.0b@icloud.com> ---
I am trying to have FreeBSD certified for use in our envionmnet. There are
sound reasons behind the network architecture and suffice to say that it is not
in my power to change the network environment. Either the officially supported
FreeBSD release meets the requirements or we cannot use it.

Your suggestion of using a L3 router as a gateway will not work because the
gateway simply sends an rediect informing FreeBSD that the desination is on
link, however FreeBSD ignores the redirect (likely due to this bug).

Please note:
1) The Linux kernel works fine in this environment;

2) This bug is either related to or a duplicate of bug 233283
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=233283

3) This bug (and perhaps 233283) is resolved in the following commit into main
https://github.com/freebsd/freebsd-src/commit/f998535a66b986f51dd65b5153d1a580d50ddfbe

Given that the issues is resolved in main, I would be most grateful for this to
be backported into 12-STABLE and 13-STABLE for inclusion into 12.4-RELEASE and
13.2-RELEASE.

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