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Date:      Sat, 2 Feb 2002 19:45:37 -0500 (EST)
From:      Greg Prosser <greg@straynet.com>
To:        <stable@freebsd.org>
Subject:   4.5-STABLE & possible ipnat breakage?
Message-ID:  <20020202193851.T15665-100000@voyager.straynet.com>

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Hi all,

	I cvsup'd and made my world and kernel via usual means yesterday
afternoon, to bring my system to 4.5-STABLE (from a -STABLE version of
about two months ago), and I'm experiencing some odd issues.

	This box is my primary gateway for my home network, and as such,
has tircproxy configured to listen on localhost:6999, and has ipnat
redirect rules to redirect irc connections through the proxy.  Before the
upgrade, the transparent proxy worked flawlessly, but as soon as I
updated, it started to not work.  No ruleset changes.  Thinking that maybe
some kernel-space structure that tircproxy uses to dig out ipnat
information to figure out where to forward the connection changed, I
rebuilt tircproxy, and tried again, to no avail.

	truss'ing the tircproxy process shows it's waiting for accept(),
which it comes out of if I do "telnet localhost 6999" on the machine,
however, when I try to connect from inside my lan to outside it on port
6667 (I have a redirect rule to catch this), it does not come out of the
accept().  It looks as tho my connection is somehow being lost in the
middle there.  I checked, and redirects from outside->in (ie, services on
private hosts accessible from outside) work fine, removing the redirect
and trying to connect outbound from the lan works (although, I don't have
the proxying features of tircproxy when I do that) so I know the rule
works, but my connection never gets to tircproxy.

Anyone have any ideas as to where to look?  Would this have anything to do
with the "big network stack changes" I keep hearing about?

Thanks in advance for any responses I may get.

-gnp


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