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Date:      Fri, 11 Nov 2005 16:35:30 -0800
From:      Sean McNeil <sean@mcneil.com>
To:        current@freebsd.org
Subject:   verrevpath failure from within my own box
Message-ID:  <1131755730.6959.7.camel@triton.mcneil.com>

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I was wondering... is there is any valid time when FreeBSD would
generate improper revpaths?

My setup is on a 6-STABLE system with the patch from suz to ip_fw2.c
that fixes a revpath problem.  It is setup as

dc0 - external nic with natd and ipfw2
sk0 - internal nic

The rule is

00300    28    2177 deny ip from any to any not verrevpath in via dc0

as you can see, there are some packets that were denied.  I can
reproduce this with nautilus by simply browsing network:///.

I've even unplugged the cables from the nics to make sure it wasn't some
bad response to a network query.  It is not.  They are being generated
within my box.

Sean





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