2 files changed, 6 insertions, 1 deletions

diff --git a/include/linux/neighbour.h b/include/linux/neighbour.h
index 8730d5dae1bc..12c9de138451 100644
--- a/include/linux/neighbour.h
+++ b/include/linux/neighbour.h
@@ -31,6 +31,7 @@ enum
  *      Neighbor Cache Entry Flags
  */
 
+#define NTF_USE         0x01
 #define NTF_PROXY       0x08    /* == ATF_PUBL */
 #define NTF_ROUTER      0x80
 
diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index 417b6d739fb7..a1cbce7fdae5 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -1654,7 +1654,11 @@ static int neigh_add(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
                                 flags &= ~NEIGH_UPDATE_F_OVERRIDE;
                 }
 
-                err = neigh_update(neigh, lladdr, ndm->ndm_state, flags);
+                if (ndm->ndm_flags & NTF_USE) {
+                        neigh_event_send(neigh, NULL);
+                        err = 0;
+                } else
+                        err = neigh_update(neigh, lladdr, ndm->ndm_state, flags);
                 neigh_release(neigh);
                 goto out_dev_put;
         }