--- linux-2.6.25.orig/net/8021q/vlan.c	2008-04-17 11:49:44.000000000 +0900
+++ linux-2.6.25/net/8021q/vlan.c	2008-05-16 15:03:03.000000000 +0900
@@ -333,6 +333,9 @@ static int register_vlan_device(struct n
 	 */
 	new_dev->mtu = real_dev->mtu;
 
+	/* features setting */
+	new_dev->features = real_dev->features;
+
 	vlan_dev_info(new_dev)->vlan_id = VLAN_ID; /* 1 through VLAN_VID_MASK */
 	vlan_dev_info(new_dev)->real_dev = real_dev;
 	vlan_dev_info(new_dev)->dent = NULL;