linux-kernel - Re: ipt_MARK/xt

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Date:	Tue, 22 Aug 2006 08:29:27 +0200
From:	Patrick McHardy <kaber@...sh.net>
To:	Jan Engelhardt <jengelh@...ux01.gwdg.de>
CC:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	netfilter@...ts.netfilter.org
Subject: Re: ipt_MARK/xt_MARK usage problem

Jan Engelhardt wrote:
> kernel 2.6.17 ships with xt_MARK, but iptables 1.3.5 still uses ipt_MARK. 
> In essence, I cannot use `iptables -j MARK` giving me 
> 
> # iptables -A INPUT -j MARK --set-mark 1
> iptables: Unknown error 4294967295
> 
> I have seen this before and the problem behind this strange error (-1) is 
> that the .targetsize/.matchsize variables in the kernel modules do not 
> match their userspace parts.

No, its a bug in the iptables userspace version you're using, which
makes it report any error as "Unknown error 4294967295". The
error itself is that you're using MARK in the filter table.

> However, this time it seems to be something different:
> 
> # iptables -t mangle -A INPUT -j MARK --set-mark 1
> 
> Works without problems. Am I missing something?
> How do I get MARK back to work in -t filter -- possibly without hacking in 
> xt_MARK.c?

You won't, its not supposed to work in the filter table.

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