[GRE]: Allow for IPPROTO_GRE protocol in namespaces.

This one was also disabled by default for sanity.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 0 deletions

diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
index 7ff52628a73f..2ada033406de 100644
--- a/net/ipv4/ip_gre.c
+++ b/net/ipv4/ip_gre.c
@@ -1297,6 +1297,7 @@ static int ipgre_fb_tunnel_init(struct net_device *dev)
 static struct net_protocol ipgre_protocol = {
         .handler        =       ipgre_rcv,
         .err_handler    =       ipgre_err,
+        .netns_ok       =       1,
 };
 
 static void ipgre_destroy_tunnels(struct ipgre_net *ign)