From mboxrd@z Thu Jan  1 00:00:00 1970
From: Patrick McHardy <kaber@trash.net>
Subject: Re: bidirectional ip_conntrack_irc
Date: Tue, 03 Jan 2006 13:00:26 +0100
Message-ID: <43BA675A.70101@trash.net>
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To: Sven Wandersleb <nibbler@saeuferleber.de>
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Sven Wandersleb wrote:
> Hi List,
> 
> is there any Plans to get ip_conntrack_irc working in both directions?
> Its sad to have connections called NEW, if in fact they are RELATED.

What do you mean by "both directions"?

> I need it, as i want to catch DCC downloads to mark/route them to a
> broader link than the default one.

Two possibilities:

- mark master conntrack, related connections will inheirit the mark
iptables -t mangle -A POSTROUTING -p tcp --dport 6667 -j CONNMARK 
--set-mark 0x1

- mark related connections registered by the irc helper
iptables -t mangle -A PREROUTING -m state --state RELATED -m helper 
--helper "irc" -j CONNMARK --set-mark 0x1

In both cases you need to set the packet mark from the connection
mark and use that in your routing rules.