[Bug 277349] The net.inet.ip.source_address_validation should ignore CARP IP in backup state

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=277349

--- Comment #7 from commit-hook@FreeBSD.org ---
A commit in branch main references this bug:

URL:
https://cgit.FreeBSD.org/src/commit/?id=56f7860087eec14b4a65310b70bd704e79e1b48c

commit 56f7860087eec14b4a65310b70bd704e79e1b48c
Author:     Gleb Smirnoff <glebius@FreeBSD.org>
AuthorDate: 2024-03-19 18:48:59 +0000
Commit:     Gleb Smirnoff <glebius@FreeBSD.org>
CommitDate: 2024-03-19 18:48:59 +0000

    carp: check CARP status in in_localip_fib(), in6_localip_fib()

    Don't report a BACKUP CARP address as local.  These two functions are used
    only by source address validation for input packets, controlled by sysctls
    net.inet.ip.source_address_validation and
    net.inet6.ip6.source_address_validation.  For this purpose we definitely
    want to treat BACKUP addresses as non local.

    This change is conservative and doesn't modify compat in_localip() and
    in6_localip().  They are used more widely than the FIB-aware versions.
    The change would modify the notion of ipfw(4) 'me' keyword.  There might
    be other consequences as in_localip() is used by various tunneling
    protocols.

    PR:                     277349

 sys/netinet/in.c   | 4 +++-
 sys/netinet6/in6.c | 4 +++-
 2 files changed, 6 insertions(+), 2 deletions(-)

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