1 files changed, 7 insertions, 1 deletions

diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c
index 2c45c069ea1a..b524c36c1273 100644
--- a/net/bridge/br_fdb.c
+++ b/net/bridge/br_fdb.c
@@ -538,6 +538,7 @@ void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source,
 {
         struct hlist_head *head = &br->hash[br_mac_hash(addr, vid)];
         struct net_bridge_fdb_entry *fdb;
+        bool fdb_modified = false;
 
         /* some users want to always flood. */
         if (hold_time(br) == 0)
@@ -558,10 +559,15 @@ void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source,
                                         source->dev->name);
                 } else {
                         /* fastpath: update of existing entry */
-                        fdb->dst = source;
+                        if (unlikely(source != fdb->dst)) {
+                                fdb->dst = source;
+                                fdb_modified = true;
+                        }
                         fdb->updated = jiffies;
                         if (unlikely(added_by_user))
                                 fdb->added_by_user = 1;
+                        if (unlikely(fdb_modified))
+                                fdb_notify(br, fdb, RTM_NEWNEIGH);
                 }
         } else {
                 spin_lock(&br->hash_lock);