Messages in this thread | | | Date | Thu, 30 Oct 2014 19:21:15 -0400 (EDT) | Subject | Re: [PATCH RESEND v2] ipv4: Do not cache routing failures due to disabled forwarding. | From | David Miller <> |
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From: Nicolas Cavallari <nicolas.cavallari@green-communications.fr> Date: Thu, 30 Oct 2014 10:09:53 +0100
> If we cache them, the kernel will reuse them, independently of > whether forwarding is enabled or not. Which means that if forwarding is > disabled on the input interface where the first routing request comes > from, then that unreachable result will be cached and reused for > other interfaces, even if forwarding is enabled on them. The opposite > is also true. > > This can be verified with two interfaces A and B and an output interface > C, where B has forwarding enabled, but not A and trying > ip route get $dst iif A from $src && ip route get $dst iif B from $src > > Signed-off-by: Nicolas Cavallari <nicolas.cavallari@green-communications.fr> > Reviewed-by: Julian Anastasov <ja@ssi.bg>
Applied and queued up for -stable, thanks.
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