[Bug 257218] pfi_ifnet leak on interface removal

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=257218

--- Comment #4 from commit-hook@FreeBSD.org ---
A commit in branch stable/13 references this bug:

URL:
https://cgit.FreeBSD.org/src/commit/?id=909167374fefcfa4981e4a43ee48872dcf76d0e2

commit 909167374fefcfa4981e4a43ee48872dcf76d0e2
Author:     Nick Reilly <nreilly@blackberry.com>
AuthorDate: 2022-11-30 14:19:44 +0000
Commit:     Kristof Provost <kp@FreeBSD.org>
CommitDate: 2022-12-28 04:56:08 +0000

    pf: fix pfi_ifnet leak on interface removal

    The detach of the interface and group were leaving pfi_ifnet memory
    behind. Check if the kif still has references, and clean it up if it
    doesn't

    On interface detach, the group deletion was notified first and then a
    change notification was sent. This would recreate the group in the kif
    layer. Reorder the change to before the delete.

    PR:             257218
    MFC after:      2 weeks
    Differential Revision:  https://reviews.freebsd.org/D37569

    (cherry picked from commit bfeef0d32a0036bf6bec93a439e0466efe6f4482)

 sys/net/if.c           |  3 +--
 sys/netpfil/pf/pf_if.c | 23 ++++++++++++++++++-----
 2 files changed, 19 insertions(+), 7 deletions(-)

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