diff --git a/ospf6d/ospf6_nsm.h b/ospf6d/ospf6_nsm.h
new file mode 100644
index 0000000..d70f1e8
--- /dev/null
+++ b/ospf6d/ospf6_nsm.h
@@ -0,0 +1,67 @@
+/*
+ * Copyright (C) 1999 Yasuhiro Ohara
+ *
+ * This file is part of GNU Zebra.
+ *
+ * GNU Zebra is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2, or (at your option) any
+ * later version.
+ *
+ * GNU Zebra is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GNU Zebra; see the file COPYING.  If not, write to the 
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330, 
+ * Boston, MA 02111-1307, USA.  
+ */
+
+#ifndef OSPF6_NSM_H
+#define OSPF6_NSM_H
+
+/* Neighbor state */
+#define NBS_DOWN                      1
+#define OSPF6_NEIGHBOR_STATE_DOWN     1
+#define NBS_ATTEMPT                   2
+#define OSPF6_NEIGHBOR_STATE_ATTEMPT  2
+#define NBS_INIT                      3
+#define OSPF6_NEIGHBOR_STATE_INIT     3
+#define NBS_TWOWAY                    4
+#define OSPF6_NEIGHBOR_STATE_TWOWAY   4
+#define NBS_EXSTART                   5
+#define OSPF6_NEIGHBOR_STATE_EXSTART  5
+#define NBS_EXCHANGE                  6
+#define OSPF6_NEIGHBOR_STATE_EXCHANGE 6
+#define NBS_LOADING                   7
+#define OSPF6_NEIGHBOR_STATE_LOADING  7
+#define NBS_FULL                      8
+#define OSPF6_NEIGHBOR_STATE_FULL     8
+
+
+
+/* Function Prototypes */
+
+#include "ospf6_types.h"
+
+int need_adjacency (struct ospf6_neighbor *);
+
+
+/* Neighbor event */
+int hello_received (struct thread *);
+int twoway_received (struct thread *);
+int negotiation_done (struct thread *);
+int exchange_done (struct thread *);
+int loading_done (struct thread *);
+int adj_ok (struct thread *);
+int seqnumber_mismatch (struct thread *);
+int bad_lsreq (struct thread *);
+int oneway_received (struct thread *);
+int inactivity_timer (struct thread *);
+
+int dr_election (struct ospf6_interface *);
+
+#endif /* OSPF6_NSM_H */
+