[Bug 261129] IPv6 default route vanishes with rtadvd/rtsold

From: <bugzilla-noreply_at_freebsd.org>
Date: Mon, 13 Jun 2022 09:13:28 UTC

--- Comment #15 from Marek Zarychta <zarychtam@plan-b.pwste.edu.pl> ---
(In reply to Tatsuki Makino from comment #14)
I have hijacked this PR, but you are probably referring to Goran's original

I have not progress with solving my issue. So far I found that with settings:
ifconfig gif0 inet6 no_radr
ifconfig awg0 inet6 no_radr
and sysctls:
the default route still gets overwritten with 2001:470:1:c84::16,
2001:470:1:c84::28 or 2001:470:1:c84::29.

I will check if filtering icmp6 on gif(4) helps and maybe will turn this off to
check if incoming RAs from gif(4) are really the culprit.

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