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-rw-r--r--src/vnet/ip/ip6_neighbor.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/src/vnet/ip/ip6_neighbor.c b/src/vnet/ip/ip6_neighbor.c
index 87bda439ae5..a6227fc413a 100644
--- a/src/vnet/ip/ip6_neighbor.c
+++ b/src/vnet/ip/ip6_neighbor.c
@@ -794,7 +794,13 @@ vnet_set_ip6_ethernet_neighbor (vlib_main_t * vm,
n = pool_elt_at_index (nm->neighbor_pool, p[0]);
/* Refuse to over-write static neighbor entry. */
if (!is_static && (n->flags & IP6_NEIGHBOR_FLAG_STATIC))
- return -2;
+ {
+ /* if MAC address match, still check to send event */
+ if (0 == memcmp (n->link_layer_address,
+ link_layer_address, n_bytes_link_layer_address))
+ goto check_customers;
+ return -2;
+ }
make_new_nd_cache_entry = 0;
}