ip-neighbor: Add flush API

Type: feature

Signed-off-by: Neale Ranns <nranns@cisco.com>
Change-Id: I96509c274895b917c3e220204d7959d9270de30d
diff --git a/src/vnet/ip-neighbor/ip_neighbor.h b/src/vnet/ip-neighbor/ip_neighbor.h
index 8769fd5..cdceadb 100644
--- a/src/vnet/ip-neighbor/ip_neighbor.h
+++ b/src/vnet/ip-neighbor/ip_neighbor.h
@@ -41,6 +41,8 @@
 extern int ip_neighbor_config (ip46_type_t type, u32 limit, u32 age,
 			       bool recycle);
 
+extern void ip_neighbor_del_all (ip46_type_t type, u32 sw_if_index);
+
 typedef walk_rc_t (*ip_neighbor_walk_cb_t) (index_t ipni, void *ctx);
 extern void ip_neighbor_walk (ip46_type_t type,
 			      u32 sw_if_index,