netdev - Re: [Bugme-new] [Bug 16216] New: wrong source addr of UDP packets when using policy routing

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Message-ID: <4C190D34.8080100@trash.net>
Date:	Wed, 16 Jun 2010 19:43:16 +0200
From:	Patrick McHardy <kaber@...sh.net>
To:	Eric Dumazet <eric.dumazet@...il.com>
CC:	Andrew Morton <akpm@...ux-foundation.org>, netdev@...r.kernel.org,
	bugzilla-daemon@...zilla.kernel.org,
	bugme-daemon@...zilla.kernel.org, borg@....net
Subject: Re: [Bugme-new] [Bug 16216] New: wrong source addr of UDP packets
 when using policy routing

Eric Dumazet wrote:
> Le mercredi 16 juin 2010 à 18:46 +0200, Patrick McHardy a écrit :
>
>   
>> This is know behaviour, fwmarks don't work for source address selection
>> since before the source address is chosen, you don't even have a packet
>> which could be marked.
>>     
>
> We know have sk->sk_mark routing (socket based), so we might change
> sk->sk_mark with appropriate iptables target when one packet is
> received... not very clean but worth to mention...
>   
That would still be too late. The proper way would be to have the 
application
set the socket mark.
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