This is a note to let you know that I've just added the patch titled net: ipv4: dst for local input routes should use l3mdev if relevant to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: net-ipv4-dst-for-local-input-routes-should-use-l3mdev-if-relevant.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From foo@baz Thu Jan 12 21:37:26 CET 2017 From: David Ahern <dsa@xxxxxxxxxxxxxxxxxxx> Date: Thu, 29 Dec 2016 15:29:03 -0800 Subject: net: ipv4: dst for local input routes should use l3mdev if relevant From: David Ahern <dsa@xxxxxxxxxxxxxxxxxxx> [ Upstream commit f5a0aab84b74de68523599817569c057c7ac1622 ] 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@xxxxxxxxxxxxxxxxxxx> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- net/ipv4/route.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -1902,7 +1902,8 @@ local_input: } } - rth = rt_dst_alloc(net->loopback_dev, flags | RTCF_LOCAL, res.type, + rth = rt_dst_alloc(l3mdev_master_dev_rcu(dev) ? : net->loopback_dev, + flags | RTCF_LOCAL, res.type, IN_DEV_CONF_GET(in_dev, NOPOLICY), false, do_cache); if (!rth) goto e_nobufs; Patches currently in stable-queue which might be from dsa@xxxxxxxxxxxxxxxxxxx are queue-4.9/net-vrf-drop-conntrack-data-after-pass-through-vrf-device-on-tx.patch queue-4.9/net-ipv4-fix-multipath-selection-with-vrf.patch queue-4.9/net-ipv4-dst-for-local-input-routes-should-use-l3mdev-if-relevant.patch queue-4.9/net-vrf-add-missing-rx-counters.patch queue-4.9/net-vrf-do-not-allow-table-id-0.patch queue-4.9/net-vrf-fix-nat-within-a-vrf.patch queue-4.9/net-fix-incorrect-original-ingress-device-index-in-pktinfo.patch -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html