diff --git a/net/ipv4/tunnel4.c b/net/ipv4/tunnel4.c
index 978b3fd61e65533f3cf01f26521fc6f406288fac..cc4cd0e518cc97ba036710d2dce675e9ddc0ac2f 100644
--- a/net/ipv4/tunnel4.c
+++ b/net/ipv4/tunnel4.c
@@ -136,6 +136,7 @@ static struct net_protocol tunnel4_protocol = {
 	.handler	=	tunnel4_rcv,
 	.err_handler	=	tunnel4_err,
 	.no_policy	=	1,
+	.netns_ok	=	1,
 };
 
 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)