This is a note to let you know that I've just added the patch titled net: ipv6: check route protocol when deleting routes 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-ipv6-check-route-protocol-when-deleting-routes.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 c2ed1880fd61a998e3ce40254a99a2ad000f1a7d Mon Sep 17 00:00:00 2001 From: Mantas M <grawity@xxxxxxxxx> Date: Fri, 16 Dec 2016 10:30:59 +0200 Subject: net: ipv6: check route protocol when deleting routes MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Mantas M <grawity@xxxxxxxxx> commit c2ed1880fd61a998e3ce40254a99a2ad000f1a7d upstream. The protocol field is checked when deleting IPv4 routes, but ignored for IPv6, which causes problems with routing daemons accidentally deleting externally set routes (observed by multiple bird6 users). This can be verified using `ip -6 route del <prefix> proto something`. Signed-off-by: Mantas Mikulėnas <grawity@xxxxxxxxx> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx> Cc: Ben Hutchings <ben@xxxxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- net/ipv6/route.c | 2 ++ 1 file changed, 2 insertions(+) --- a/net/ipv6/route.c +++ b/net/ipv6/route.c @@ -2166,6 +2166,8 @@ static int ip6_route_del(struct fib6_con continue; if (cfg->fc_metric && cfg->fc_metric != rt->rt6i_metric) continue; + if (cfg->fc_protocol && cfg->fc_protocol != rt->rt6i_protocol) + continue; dst_hold(&rt->dst); read_unlock_bh(&table->tb6_lock); Patches currently in stable-queue which might be from grawity@xxxxxxxxx are queue-4.9/net-ipv6-check-route-protocol-when-deleting-routes.patch