diff --git a/net/batman-adv/routing.c b/net/batman-adv/routing.c
index a1d8c9b..1d1fd04 100644
--- a/net/batman-adv/routing.c
+++ b/net/batman-adv/routing.c
@@ -673,6 +673,13 @@
 	if (!is_my_mac(roam_adv_packet->dst))
 		return route_unicast_packet(skb, recv_if);
 
+	/* check if it is a backbone gateway. we don't accept
+	 * roaming advertisement from it, as it has the same
+	 * entries as we have.
+	 */
+	if (bla_is_backbone_gw_orig(bat_priv, roam_adv_packet->src))
+		goto out;
+
 	orig_node = orig_hash_find(bat_priv, roam_adv_packet->src);
 	if (!orig_node)
 		goto out;