diff --git a/ripngd/ripngd.h b/ripngd/ripngd.h
new file mode 100644
index 0000000..2509bdd
--- /dev/null
+++ b/ripngd/ripngd.h
@@ -0,0 +1,318 @@
+/*
+ * RIPng related value and structure.
+ * Copyright (C) 1998 Kunihiro Ishiguro
+ *
+ * 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_RIPNG_RIPNGD_H
+#define _ZEBRA_RIPNG_RIPNGD_H
+
+/* RIPng version and port number. */
+#define RIPNG_V1                         1
+#define RIPNG_PORT_DEFAULT             521
+#define RIPNG_VTY_PORT                2603
+#define RIPNG_VTYSH_PATH              "/tmp/.ripngd"
+#define RIPNG_MAX_PACKET_SIZE         1500
+#define RIPNG_PRIORITY_DEFAULT           0
+
+/* RIPng commands. */
+#define RIPNG_REQUEST                    1
+#define RIPNG_RESPONSE                   2
+
+/* RIPng metric and multicast group address. */
+#define RIPNG_METRIC_INFINITY           16
+#define RIPNG_METRIC_NEXTHOP          0xff
+#define RIPNG_GROUP              "ff02::9"
+
+/* RIPng timers. */
+#define RIPNG_UPDATE_TIMER_DEFAULT      30
+#define RIPNG_TIMEOUT_TIMER_DEFAULT    180
+#define RIPNG_GARBAGE_TIMER_DEFAULT    120
+
+/* Default config file name. */
+#define RIPNG_DEFAULT_CONFIG "ripngd.conf"
+
+/* RIPng route types. */
+#define RIPNG_ROUTE_RTE                  0
+#define RIPNG_ROUTE_STATIC               1
+#define RIPNG_ROUTE_AGGREGATE            2
+
+/* Interface send/receive configuration. */
+#define RIPNG_SEND_UNSPEC                0
+#define RIPNG_SEND_OFF                   1
+#define RIPNG_RECEIVE_UNSPEC             0
+#define RIPNG_RECEIVE_OFF                1
+
+/* Split horizon definitions. */
+#define RIPNG_SPLIT_HORIZON_UNSPEC       0
+#define RIPNG_SPLIT_HORIZON_NONE         1
+#define RIPNG_SPLIT_HORIZON              2
+#define RIPNG_SPLIT_HORIZON_POISONED     3
+
+/* RIP default route's accept/announce methods. */
+#define RIPNG_DEFAULT_ADVERTISE_UNSPEC   0
+#define RIPNG_DEFAULT_ADVERTISE_NONE     1
+#define RIPNG_DEFAULT_ADVERTISE          2
+
+#define RIPNG_DEFAULT_ACCEPT_UNSPEC      0
+#define RIPNG_DEFAULT_ACCEPT_NONE        1
+#define RIPNG_DEFAULT_ACCEPT             2
+
+/* Default value for "default-metric" command. */
+#define RIPNG_DEFAULT_METRIC_DEFAULT     1
+
+/* For max RTE calculation. */
+#ifndef IPV6_HDRLEN
+#define IPV6_HDRLEN 40
+#endif /* IPV6_HDRLEN */
+
+#ifndef IFMINMTU
+#define IFMINMTU    576
+#endif /* IFMINMTU */
+
+/* RIPng structure. */
+struct ripng 
+{
+  /* RIPng socket. */
+  int sock;
+
+  /* RIPng Parameters.*/
+  u_char command;
+  u_char version;
+  unsigned long update_time;
+  unsigned long timeout_time;
+  unsigned long garbage_time;
+  int max_mtu;
+  int default_metric;
+  int default_information;
+
+  /* Input/output buffer of RIPng. */
+  struct stream *ibuf;
+  struct stream *obuf;
+
+  /* RIPng routing information base. */
+  struct route_table *table;
+
+  /* RIPng only static route information. */
+  struct route_table *route;
+
+  /* RIPng aggregate route information. */
+  struct route_table *aggregate;
+
+  /* RIPng threads. */
+  struct thread *t_read;
+  struct thread *t_write;
+  struct thread *t_update;
+  struct thread *t_garbage;
+  struct thread *t_zebra;
+
+  /* Triggered update hack. */
+  int trigger;
+  struct thread *t_triggered_update;
+  struct thread *t_triggered_interval;
+
+  /* For redistribute route map. */
+  struct
+  {
+    char *name;
+    struct route_map *map;
+    int metric_config;
+    u_int32_t metric;
+  } route_map[ZEBRA_ROUTE_MAX];
+};
+
+/* Routing table entry. */
+struct rte
+{
+  struct in6_addr addr;
+  u_short tag;
+  u_char prefixlen;
+  u_char metric;
+};
+
+/* RIPNG send packet. */
+struct ripng_packet
+{
+  u_char command;
+  u_char version;
+  u_int16_t zero; 
+  struct rte rte[1];
+};
+
+/* Each route's information. */
+struct ripng_info
+{
+  /* This route's type.  Static, ripng or aggregate. */
+  u_char type;
+
+  /* Sub type for static route. */
+  u_char sub_type;
+
+  /* RIPng specific information */
+  struct in6_addr nexthop;	
+  struct in6_addr from;
+
+  /* Which interface does this route come from. */
+  unsigned int ifindex;		
+
+  /* Metric of this route.  */
+  u_char metric;		
+
+  /* Tag field of RIPng packet.*/
+  u_int16_t tag;		
+
+  /* For aggregation. */
+  unsigned int suppress;
+
+  /* Flags of RIPng route. */
+#define RIPNG_RTF_FIB      1
+#define RIPNG_RTF_CHANGED  2
+  u_char flags;
+
+  /* Garbage collect timer. */
+  struct thread *t_timeout;
+  struct thread *t_garbage_collect;
+
+  /* Route-map features - this variables can be changed. */
+  u_char metric_set;
+
+  struct route_node *rp;
+};
+
+/* RIPng tag structure. */
+struct ripng_tag
+{
+  /* Tag value. */
+  u_int16_t tag;
+
+  /* Port. */
+  u_int16_t port;
+
+  /* Multicast group. */
+  struct in6_addr maddr;
+
+  /* Table number. */
+  int table;
+
+  /* Distance. */
+  int distance;
+
+  /* Split horizon. */
+  u_char split_horizon;
+
+  /* Poison reverse. */
+  u_char poison_reverse;
+};
+
+/* RIPng specific interface configuration. */
+struct ripng_interface
+{
+  /* RIPng is enabled on this interface. */
+  int enable_network;
+  int enable_interface;
+
+  /* RIPng is running on this interface. */
+  int running;
+
+  /* For filter type slot. */
+#define RIPNG_FILTER_IN  0
+#define RIPNG_FILTER_OUT 1
+#define RIPNG_FILTER_MAX 2
+
+  /* Access-list. */
+  struct access_list *list[RIPNG_FILTER_MAX];
+
+  /* Prefix-list. */
+  struct prefix_list *prefix[RIPNG_FILTER_MAX];
+
+  /* Route-map. */
+  struct route_map *routemap[RIPNG_FILTER_MAX];
+
+  /* RIPng tag configuration. */
+  struct ripng_tag *rtag;
+
+  /* Default information originate. */
+  u_char default_originate;
+
+  /* Default information only. */
+  u_char default_only;
+
+  /* Wake up thread. */
+  struct thread *t_wakeup;
+
+  /* Passive interface. */
+  int passive;
+};
+
+/* All RIPng events. */
+enum ripng_event
+{
+  RIPNG_READ,
+  RIPNG_ZEBRA,
+  RIPNG_REQUEST_EVENT,
+  RIPNG_UPDATE_EVENT,
+  RIPNG_TRIGGERED_UPDATE,
+};
+
+/* RIPng timer on/off macro. */
+#define RIPNG_TIMER_ON(T,F,V) \
+do { \
+   if (!(T)) \
+      (T) = thread_add_timer (master, (F), rinfo, (V)); \
+} while (0)
+
+#define RIPNG_TIMER_OFF(T) \
+do { \
+   if (T) \
+     { \
+       thread_cancel(T); \
+       (T) = NULL; \
+     } \
+} while (0)
+
+/* Count prefix size from mask length */
+#define PSIZE(a) (((a) + 7) / (8))
+
+/* Extern variables. */
+extern struct ripng *ripng;
+
+extern struct thread_master *master;
+
+/* Prototypes. */
+void ripng_init ();
+void ripng_if_init ();
+void ripng_terminate ();
+void ripng_zclient_start ();
+void zebra_init ();
+struct ripng_info * ripng_info_new ();
+void ripng_info_free (struct ripng_info *rinfo);
+void ripng_event (enum ripng_event, int);
+int ripng_request (struct interface *ifp);
+void ripng_redistribute_add (int, int, struct prefix_ipv6 *, unsigned int);
+void ripng_redistribute_delete (int, int, struct prefix_ipv6 *, unsigned int);
+void ripng_redistribute_withdraw (int type);
+
+void ripng_distribute_update_interface (struct interface *);
+void ripng_if_rmap_update_interface (struct interface *);
+
+void ripng_zebra_ipv6_add (struct prefix_ipv6 *p, struct in6_addr *nexthop, unsigned int ifindex);
+void ripng_zebra_ipv6_delete (struct prefix_ipv6 *p, struct in6_addr *nexthop, unsigned int ifindex);
+void ripng_route_map_init ();
+
+#endif /* _ZEBRA_RIPNG_RIPNGD_H */