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diff --git a/src/vnet/ip-neighbor/ip_neighbor_watch.h b/src/vnet/ip-neighbor/ip_neighbor_watch.h
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+/*
+ * ip_neighboor_watch.h: ip neighbor event handling
+ *
+ * Copyright (c) 2018 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __IP_NEIGHBOR_WATCH_H__
+#define __IP_NEIGHBOR_WATCH_H__
+
+#include <vnet/ip-neighbor/ip_neighbor_types.h>
+
+extern void ip_neighbor_watch (const ip46_address_t * ip,
+ ip46_type_t type,
+ u32 sw_if_index,
+ const ip_neighbor_watcher_t * watch);
+extern void ip_neighbor_unwatch (const ip46_address_t * ip,
+ ip46_type_t type,
+ u32 sw_if_index,
+ const ip_neighbor_watcher_t * watch);
+
+extern void ip_neighbor_publish (index_t ipni);
+
+#endif
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */