[Bug 214613] Reloading pf rules breaks connections on lo0

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=214613

--- Comment #1 from commit-hook at freebsd.org ---
A commit references this bug:

Author: kp
Date: Sat Apr 28 13:16:59 UTC 2018
New revision: 333084
URL: https://svnweb.freebsd.org/changeset/base/333084

Log:
  pfctl: Don't break connections on skipped interfaces on reload

  On reload we used to first flush everything, including the list of skipped
  interfaces.  This can lead to termination of these connections if they send
  packets before the new configuration is applied.

  Note that this doesn't currently happen on 12 or 11, because of special
EACCES
  handling introduced in r315514. This special behaviour in tcp_output() may
  change, hence the fix in pfctl.

  PR:           214613

Changes:
  head/sbin/pfctl/pfctl.c

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