From mboxrd@z Thu Jan  1 00:00:00 1970
From: Patrick McHardy <kaber@trash.net>
Subject: Re: 2.6.20: ipt_owner match and INPUT chain
Date: Fri, 02 Mar 2007 12:57:11 +0100
Message-ID: <45E81117.1060107@trash.net>
References: <200703020946.20765.thomas.jarosch@intra2net.com>
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To: Thomas Jarosch <thomas.jarosch@intra2net.com>
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Thomas Jarosch wrote:
> Hello together,
> 
> the ipt_owner match of 2.6.20 is not allowed to be used in the INPUT chain. 
> 
> The .hooks entry looks like this:
> .hooks          = (1 << NF_IP_LOCAL_OUT) | (1 << NF_IP_POST_ROUTING)
> 
> Back in the days it was allowed to be used in the INPUT chain for TCP/UDP.
> I've searched the mailinglist archive but couldn't find anything useful.
> What's the reason behind the change?

The mainline kernel never supported this, you're thinking of the
owner socketlookup patch, which had multiple issues and was never
merged.