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Date:      Mon, 23 Apr 2018 12:20:45 +0000
Subject:   [Bug 227674] [ipfw] [ipv6] ICMPv6 echo replies incorrectly matched by kernel ipfw
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--- Comment #3 from ---
A commit references this bug:

Author: ae
Date: Mon Apr 23 12:20:08 UTC 2018
New revision: 332886

  icmp6_reflect() sends ICMPv6 message with new IPv6 header. So, it is
  considered as originated by our host packet. And thus rcvif should be
  NULL, since it is used by ipfw(4) to determine that packet was originated
  from this host. Some of icmp6_reflect() consumers reuse mbuf and m_pkthdr
  without resetting rcvif pointer. To avoid this always reset m_pkthdr.rcvif
  pointer to NULL in icmp6_reflect(). Also remove such line and comment
  describing this from icmp6_error(), since it does not longer matters.

  PR:           227674
  Reported by:  eugen
  MFC after:    1 week


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