Re: [PATCH] 2.6.22.6 NETWORKING [IPV4]: Always use source addr inskb to reply packet

From: David Miller
Date: Mon Sep 17 2007 - 22:20:59 EST


From: lepton <ytht.net@xxxxxxxxx>
Date: Tue, 18 Sep 2007 10:16:17 +0800

> Hi,
> In some situation, icmp_reply and ip_send_reply will send
> out packet with the wrong source addr, the following patch
> will fix this.
>
> I don't understand why we must use rt->rt_src in the current
> code, if this is a wrong fix, please correct me.
>
> Signed-off-by: Lepton Wu <ytht.net@xxxxxxxxx>

That the address is wrong is your opinion only :-)

Source address selection is a rather complex topic, and
here we are definitely purposefully using the source
address selected by the routing lookup for the reply.
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