diff --git a/ospf6d/ospf6_abr.h b/ospf6d/ospf6_abr.h
new file mode 100644
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--- /dev/null
+++ b/ospf6d/ospf6_abr.h
@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2004 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_ABR_H
+#define OSPF6_ABR_H
+
+/* Debug option */
+extern unsigned char conf_debug_ospf6_abr;
+#define OSPF6_DEBUG_ABR_ON() \
+  (conf_debug_ospf6_abr = 1)
+#define OSPF6_DEBUG_ABR_OFF() \
+  (conf_debug_ospf6_abr = 0)
+#define IS_OSPF6_DEBUG_ABR \
+  (conf_debug_ospf6_abr)
+
+/* Inter-Area-Prefix-LSA */
+struct ospf6_inter_prefix_lsa
+{
+  u_int32_t metric;
+  struct ospf6_prefix prefix;
+};
+
+/* Inter-Area-Router-LSA */
+struct ospf6_inter_router_lsa
+{
+  u_char mbz;
+  u_char options[3];
+  u_int32_t metric;
+  u_int32_t router_id;
+};
+
+#define OSPF6_ABR_SUMMARY_METRIC(E) (ntohl ((E)->metric & htonl (0x00ffffff)))
+#define OSPF6_ABR_SUMMARY_METRIC_SET(E,C) \
+  { (E)->metric &= htonl (0x00000000); \
+    (E)->metric |= htonl (0x00ffffff) & htonl (C); }
+
+void ospf6_abr_originate_prefix_to_area (struct ospf6_route *route,
+                                         struct ospf6_area *area);
+void ospf6_abr_originate_prefix (struct ospf6_route *route, struct ospf6 *o);
+void ospf6_abr_examin_summary (struct ospf6_lsa *lsa, struct ospf6_area *oa);
+
+int config_write_ospf6_debug_abr (struct vty *vty);
+void install_element_ospf6_debug_abr ();
+int ospf6_abr_config_write (struct vty *vty);
+
+void ospf6_abr_init ();
+
+#endif /*OSPF6_ABR_H*/
+
+