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Date: Tue, 3 Apr 2012 22:12:45 +0400
From: Gleb Smirnoff <glebius@FreeBSD.org>
To: src-committers@FreeBSD.org, svn-src-all@FreeBSD.org,
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Subject: Re: svn commit: r233846 - head/sys/contrib/pf/net
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On Tue, Apr 03, 2012 at 06:09:21PM +0000, Gleb Smirnoff wrote:
T> Author: glebius
T> Date: Tue Apr  3 18:09:20 2012
T> New Revision: 233846
T> URL: http://svn.freebsd.org/changeset/base/233846
T> 
T> Log:
T>   Since pf 4.5 import pf(4) has a mechanism to defer
T>   forwarding a packet, that creates state, until
T>   pfsync(4) peer acks state addition (or 10 msec
T>   timeout passes).
T>   
T>   This is needed for active-active CARP configurations,
T>   which are poorly supported in FreeBSD and arguably
T>   a good idea at all.
T>   
T>   Unfortunately by the time of import this feature in
T>   OpenBSD was turned on, and did not have a switch to
T>   turn it off. This leaked to FreeBSD.
T>   
T>   This change make it possible to turn this feature
T>   off via ioctl() and turns it off by default.

Fortunately, we got an unused field in struct pfsyncreq,
so this commit doesn't break ioctl() ABI, and this is
mergeable.

-- 
Totus tuus, Glebius.