From owner-freebsd-ipfw@FreeBSD.ORG  Thu Aug 25 08:38:45 2005
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Date: Thu, 25 Aug 2005 15:38:05 +0700 (ICT)
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From: Olivier Nicole <on@cs.ait.ac.th>
To: freebsd-ipfw@freebsd.org
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Subject: Checksum in nat bridge
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Hi,

I am using ipfilter (is there a better list to ask my question?)

I have a machine that is bridged between the interfaces, when I NAT a
packet the checksum is not recalculated automatically.

Darren gave me a patch, but that is not corresponding to the version
of ipfilter bundled with FreeBSD 4.10.

So does anyone know how to force ip_nat to recalculate the checksum
after it changed a packet in a bridg3d environment?

TIA

Olivier