Re: interface based conntrack entry

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On Mar 18 2008 00:25, Eric Leblond wrote:
>On Monday, 2008 March 17 at 16:13:45 -0400, Sohan Shetty wrote:
>> Forwarding query from Paritosh Tyagi to Netfilter mailing list.
>> 
>> Is there a patch to support the in-interface and out-interface or
>> mark in the conntrack module? So, we can have two entries in there
>> where the 4 tuple is the same only the interface is different?
>
>There is no such patch. A similar question was asked some time ago and
>if I remember well, the conclusion was the setup was too weird from a 
>firewall point-of-view.
>Suggestion was made to use some virtualization solution.

I believe that nf_conntrack deliberately does not use interfaces
as tuple parts because packets may very well come in on
and/or leave on different interfaces (routing on fwmark).
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