From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Miller <davem@davemloft.net>
Subject: Re: [PATCH net] net: ipv4: dst for local input routes should use
 l3mdev if relevant
Date: Thu, 29 Dec 2016 22:28:08 -0500 (EST)
Message-ID: <20161229.222808.764899390610544123.davem@davemloft.net>
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From: David Ahern <dsa@cumulusnetworks.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@cumulusnetworks.com>

Applied and queued up for -stable, thanks David.