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diff --git a/ospfd/ospf_neighbor.h b/ospfd/ospf_neighbor.h
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+/*
+ * OSPF Neighbor functions.
+ * Copyright (C) 1999, 2000 Toshiaki Takada
+ *
+ * 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 _ZEBRA_OSPF_NEIGHBOR_H
+#define _ZEBRA_OSPF_NEIGHBOR_H
+
+/* Neighbor Data Structure */
+struct ospf_neighbor
+{
+  /* This neighbor's parent ospf interface. */
+  struct ospf_interface *oi;
+
+  /* OSPF neighbor Information */
+  u_char state;				/* NSM status. */
+  u_char dd_flags;			/* DD bit flags. */
+  u_int32_t dd_seqnum;			/* DD Sequence Number. */
+
+  /* Neighbor Information from Hello. */
+  struct prefix address;		/* Neighbor Interface Address. */
+
+  struct in_addr src;			/* Src address. */
+  struct in_addr router_id;		/* Router ID. */
+  u_char options;			/* Options. */
+  int priority;				/* Router Priority. */
+  struct in_addr d_router;		/* Designated Router. */
+  struct in_addr bd_router;		/* Backup Designated Router. */
+
+  /* Last sent Database Description packet. */
+  struct ospf_packet *last_send;
+  /* Timestemp when last Database Description packet was sent */
+  struct timeval last_send_ts;
+
+  /* Last received Databse Description packet. */
+  struct
+  {
+    u_char options;
+    u_char flags;
+    u_int32_t dd_seqnum;
+  } last_recv;
+
+  /* LSA data. */
+  struct ospf_lsdb ls_rxmt;
+  struct ospf_lsdb db_sum;
+  struct ospf_lsdb ls_req;
+  struct ospf_lsa *ls_req_last;
+
+  u_int32_t crypt_seqnum;           /* Cryptographic Sequence Number. */
+
+  /* Timer values. */
+  u_int32_t v_inactivity;
+  u_int32_t v_db_desc;
+  u_int32_t v_ls_req;
+  u_int32_t v_ls_upd;
+
+  /* Threads. */
+  struct thread *t_inactivity;
+  struct thread *t_db_desc;
+  struct thread *t_ls_req;
+  struct thread *t_ls_upd;
+  struct thread *t_hello_reply;
+
+  /* Statistics Field */
+  u_int32_t state_change;
+  struct ospf_nbr_nbma *nbr_nbma;
+};
+
+/* Macros. */
+#define NBR_IS_DR(n)	IPV4_ADDR_SAME (&n->address.u.prefix4, &n->d_router)
+#define NBR_IS_BDR(n)   IPV4_ADDR_SAME (&n->address.u.prefix4, &n->bd_router)
+
+/* Prototypes. */
+struct ospf_neighbor *ospf_nbr_new (struct ospf_interface *);
+void ospf_nbr_free (struct ospf_neighbor *);
+void ospf_nbr_delete (struct ospf_neighbor *);
+int ospf_nbr_bidirectional (struct in_addr *, struct in_addr *, int);
+void ospf_nbr_add_self (struct ospf_interface *);
+int ospf_nbr_count (struct route_table *, int);
+#ifdef HAVE_OPAQUE_LSA
+int ospf_opaque_capable_nbr_count (struct route_table *nbrs, int status);
+#endif /* HAVE_OPAQUE_LSA */
+struct ospf_neighbor *ospf_nbr_lookup_by_addr (struct route_table *,
+					       struct in_addr *);
+struct ospf_neighbor *ospf_nbr_lookup_by_routerid (struct route_table *,
+						   struct in_addr *);
+void ospf_renegotiate_optional_capabilities (struct ospf *top);
+
+#endif /* _ZEBRA_OSPF_NEIGHBOR_H */