2.6.20: ipt_owner match and INPUT chain

[Patrick McHardy]

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.