netdev - Re: [PATCH net] net: ipv4: dst for local input routes should use l3mdev if relevant

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Message-Id: <20161229.222808.764899390610544123.davem@davemloft.net>
Date:   Thu, 29 Dec 2016 22:28:08 -0500 (EST)
From:   David Miller <davem@...emloft.net>
To:     dsa@...ulusnetworks.com
Cc:     netdev@...r.kernel.org
Subject: Re: [PATCH net] net: ipv4: dst for local input routes should use
 l3mdev if relevant

From: David Ahern <dsa@...ulusnetworks.com>
Date: Thu, 29 Dec 2016 15:29:03 -0800

> IPv4 output routes already use l3mdev device instead of loopback for dst's
> if it is applicable. Change local input routes to do the same.
> 
> This fixes icmp responses for unreachable UDP ports which are directed
> to the wrong table after commit 9d1a6c4ea43e4 because local_input
> routes use the loopback device. Moving from ingress device to loopback
> loses the L3 domain causing responses based on the dst to get to lost.
> 
> Fixes: 9d1a6c4ea43e4 ("net: icmp_route_lookup should use rt dev to
> 		       determine L3 domain")
> Signed-off-by: David Ahern <dsa@...ulusnetworks.com>

Applied and queued up for -stable, thanks David.