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Date: Mon, 08 Oct 2007 15:55:10 +0900
From: Randy Bush <randy@psg.com>
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Subject: Re: ipfw nat befuddlement
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i386 current

kernel has
options         IPFIREWALL
options         IPFIREWALL_VERBOSE
options         IPFIREWALL_VERBOSE_LIMIT=100
options         IPDIVERT
options         IPFIREWALL_NAT          #thanks to paulo and andrey
options         LIBALIAS

# ipfw -q /etc/ipfw.rules
Line 34: unrecognised option [-1] config

# grep -n nat /etc/ipfw.rules
33:add nat 123 all from any to any
34:add nat 123 config if vr0

more clue bat, please

randy