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Date:      23 Sep 2016 13:05:47 +0200
From:      "Warranty Engage" <we1wu@server1.clientz.co.za>
To:        freebsd-pf@freebsd.org
Subject:   Mechanical Breakdown Warranty from R130 per month
Message-ID:  <FF02270F-F4B6-4FED-B7B4-203C4A8E7300@server1.clientz.co.za>

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to view in your browser=0Ahttp://www.warrantyengagemail.co.za/?ut=
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From owner-freebsd-pf@freebsd.org  Sat Sep 24 07:10:30 2016
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From: bugzilla-noreply@freebsd.org
To: freebsd-pf@FreeBSD.org
Subject: [Bug 185633] [pf] scrubbing bug in transparent mode bug with bigger
 than MTU UDP packet
Date: Sat, 24 Sep 2016 07:10:29 +0000
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D185633

--- Comment #15 from commit-hook@freebsd.org ---
A commit references this bug:

Author: kp
Date: Sat Sep 24 07:09:43 UTC 2016
New revision: 306289
URL: https://svnweb.freebsd.org/changeset/base/306289

Log:
  bridge: Fix fragment handling and memory leak

  Fragmented UDP and ICMP packets were corrupted if a firewall with
reassembling
  feature (like pf'scrub) is enabled on the bridge.  This patch fixes corru=
pted
  packet problem and the panic (triggered easly with low RAM) as explain in=
 PR
  185633.

  bridge_pfil and bridge_fragment relationship:

  bridge_pfil() receive (IN direction) packets and sent it to the firewall =
The
  firewall can be configured for reassembling fragmented packet (like
pf'scrubing)
  in one mbuf chain when bridge_pfil() need to send this reassembled packet=
 to
the
  outgoing interface, it needs to re-fragment it by using bridge_fragment()
  bridge_fragment() had to split this mbuf (using ip_fragment) first then
  had to M_PREPEND each packet in the mbuf chain for adding Ethernet
  header.

  But M_PREPEND can sometime create a new mbuf on the begining of the mbuf
chain,
  then the "main" pointer of this mbuf chain should be updated and this cas=
e is
  tottaly forgotten. The original bridge_fragment code (Revision 158140,
  2006 April 29) came from OpenBSD, and the call to bridge_enqueue was
  embedded.  But on FreeBSD, bridge_enqueue() is done after bridge_fragment=
(),
  then the original OpenBSD code can't work as-it of FreeBSD.

  PR:           185633
  Submitted by: Olivier Cochard-Labb?
  Differential Revision:        https://reviews.freebsd.org/D7780

Changes:
  head/sys/net/if_bridge.c

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