[Bug 255388] netinet/ip_input.c: Do not forward datagrams original from 169.254.0.0/16

From: <bugzilla-noreply_at_freebsd.org>
Date: Thu, 17 Jun 2021 08:22:45 UTC 
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=255388

--- Comment #7 from commit-hook@FreeBSD.org ---
A commit in branch stable/11 references this bug:

URL:
https://cgit.FreeBSD.org/src/commit/?id=9d30353cb49467ba2b672673a5765588c4e857ec

commit 9d30353cb49467ba2b672673a5765588c4e857ec
Author:     Zhenlei Huang <zlei.huang@gmail.com>
AuthorDate: 2021-05-18 20:51:37 +0000
Commit:     Lutz Donnerhacke <donner@FreeBSD.org>
CommitDate: 2021-06-17 08:21:00 +0000

    Do not forward datagrams originated by link-local addresses

    The current implement of ip_input() reject packets destined for
    169.254.0.0/16, but not those original from 169.254.0.0/16 link-local
    addresses.

    Fix to fully respect RFC 3927 section 2.7.

    PR:             255388
    Reviewed by:    donner, rgrimes, karels
    Differential Revision:  https://reviews.freebsd.org/D29968
    Reviewed by:    rgrimes, donner, karels, marcus, emaste
    Differential Revision: https://reviews.freebsd.org/D30374

    (cherry picked from commit 3d846e48227e2e78c1e7b35145f57353ffda56ba)
    (cherry picked from commit 03b0505b8fe848f33f2f38fe89dd5538908c847e)

 sys/netinet/ip_input.c | 19 ++++++++++++-------
 1 file changed, 12 insertions(+), 7 deletions(-)

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