diff --git a/ospf6d/ospf6_intra.h b/ospf6d/ospf6_intra.h
index 4fb68e9..28780b4 100644
--- a/ospf6d/ospf6_intra.h
+++ b/ospf6d/ospf6_intra.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2001 Yasuhiro Ohara
+ * Copyright (C) 2003 Yasuhiro Ohara
  *
  * This file is part of GNU Zebra.
  *
@@ -22,10 +22,132 @@
 #ifndef OSPF6_INTRA_H
 #define OSPF6_INTRA_H
 
-void ospf6_intra_topology_add (void *);
-void ospf6_intra_topology_remove (void *);
+/* Router-LSA */
+struct ospf6_router_lsa
+{
+  u_char bits;
+  u_char options[3];
+  /* followed by ospf6_router_lsdesc(s) */
+};
+
+/* Link State Description in Router-LSA */
+struct ospf6_router_lsdesc
+{
+  u_char    type;
+  u_char    reserved;
+  u_int16_t metric;                /* output cost */
+  u_int32_t interface_id;
+  u_int32_t neighbor_interface_id;
+  u_int32_t neighbor_router_id;
+};
+
+#define OSPF6_ROUTER_LSDESC_POINTTOPOINT       1
+#define OSPF6_ROUTER_LSDESC_TRANSIT_NETWORK    2
+#define OSPF6_ROUTER_LSDESC_STUB_NETWORK       3
+#define OSPF6_ROUTER_LSDESC_VIRTUAL_LINK       4
+
+#define ROUTER_LSDESC_IS_TYPE(t,x)                         \
+  ((((struct ospf6_router_lsdesc *)(x))->type ==           \
+   OSPF6_ROUTER_LSDESC_ ## t) ? 1 : 0)
+#define ROUTER_LSDESC_GET_METRIC(x)                        \
+  (ntohs (((struct ospf6_router_lsdesc *)(x))->metric))
+#define ROUTER_LSDESC_GET_IFID(x)                          \
+  (ntohl (((struct ospf6_router_lsdesc *)(x))->interface_id))
+#define ROUTER_LSDESC_GET_NBR_IFID(x)                      \
+  (ntohl (((struct ospf6_router_lsdesc *)(x))->neighbor_interface_id))
+#define ROUTER_LSDESC_GET_NBR_ROUTERID(x)                  \
+  (((struct ospf6_router_lsdesc *)(x))->neighbor_router_id)
+
+/* Network-LSA */
+struct ospf6_network_lsa
+{
+  u_char reserved;
+  u_char options[3];
+  /* followed by ospf6_netowrk_lsd(s) */
+};
+
+/* Link State Description in Router-LSA */
+struct ospf6_network_lsdesc
+{
+  u_int32_t router_id;
+};
+#define NETWORK_LSDESC_GET_NBR_ROUTERID(x)                  \
+  (((struct ospf6_network_lsdesc *)(x))->router_id)
+
+/* Link-LSA */
+struct ospf6_link_lsa
+{
+  u_char          priority;
+  u_char          options[3];
+  struct in6_addr linklocal_addr;
+  u_int32_t       prefix_num;
+  /* followed by ospf6 prefix(es) */
+};
+
+/* Intra-Area-Prefix-LSA */
+struct ospf6_intra_prefix_lsa
+{
+  u_int16_t prefix_num;
+  u_int16_t ref_type;
+  u_int32_t ref_id;
+  u_int32_t ref_adv_router;
+  /* followed by ospf6 prefix(es) */
+};
+
+
+#define OSPF6_ROUTER_LSA_SCHEDULE(oa) \
+  do { \
+    if (! (oa)->thread_router_lsa) \
+      (oa)->thread_router_lsa = \
+        thread_add_event (master, ospf6_router_lsa_originate, oa, 0); \
+  } while (0)
+#define OSPF6_NETWORK_LSA_SCHEDULE(oi) \
+  do { \
+    if (! (oi)->thread_network_lsa) \
+      (oi)->thread_network_lsa = \
+        thread_add_event (master, ospf6_network_lsa_originate, oi, 0); \
+  } while (0)
+#define OSPF6_LINK_LSA_SCHEDULE(oi) \
+  do { \
+    if (! (oi)->thread_link_lsa) \
+      (oi)->thread_link_lsa = \
+        thread_add_event (master, ospf6_link_lsa_originate, oi, 0); \
+  } while (0)
+#define OSPF6_INTRA_PREFIX_LSA_SCHEDULE_STUB(oa) \
+  do { \
+    if (! (oa)->thread_intra_prefix_lsa) \
+      (oa)->thread_intra_prefix_lsa = \
+        thread_add_event (master, ospf6_intra_prefix_lsa_originate_stub, \
+                          oa, 0); \
+  } while (0)
+#define OSPF6_INTRA_PREFIX_LSA_SCHEDULE_TRANSIT(oi) \
+  do { \
+    if (! (oi)->thread_intra_prefix_lsa) \
+      (oi)->thread_intra_prefix_lsa = \
+        thread_add_event (master, ospf6_intra_prefix_lsa_originate_transit, \
+                          oi, 0); \
+  } while (0)
+
+/* Function Prototypes */
+char *ospf6_router_lsdesc_lookup (u_char type, u_int32_t interface_id,
+                            u_int32_t neighbor_interface_id,
+                            u_int32_t neighbor_router_id,
+                            struct ospf6_lsa *lsa);
+char *ospf6_network_lsdesc_lookup (u_int32_t router_id,
+                                   struct ospf6_lsa *lsa);
+
+int ospf6_router_lsa_originate (struct thread *);
+int ospf6_network_lsa_originate (struct thread *);
+int ospf6_link_lsa_originate (struct thread *);
+int ospf6_intra_prefix_lsa_originate_transit (struct thread *);
+int ospf6_intra_prefix_lsa_originate_stub (struct thread *);
+void ospf6_intra_prefix_lsa_add (struct ospf6_lsa *lsa);
+void ospf6_intra_prefix_lsa_remove (struct ospf6_lsa *lsa);
+
+void ospf6_intra_route_calculation (struct ospf6_area *oa);
+void ospf6_intra_asbr_calculation (struct ospf6_area *oa);
 
 void ospf6_intra_init ();
 
-#endif /* OSPF6_INTRA_H */
+#endif /* OSPF6_LSA_H */