diff --git a/include/linux/rtnetlink.h b/include/linux/rtnetlink.h
index 577592e..2c1de89 100644
--- a/include/linux/rtnetlink.h
+++ b/include/linux/rtnetlink.h
@@ -801,6 +801,10 @@
 	return table;
 }
 
+extern int ndo_dflt_fdb_dump(struct sk_buff *skb,
+			     struct netlink_callback *cb,
+			     struct net_device *dev,
+			     int idx);
 #endif /* __KERNEL__ */