diff --git a/ripngd/ripng_route.h b/ripngd/ripng_route.h
new file mode 100644
index 0000000..283d826
--- /dev/null
+++ b/ripngd/ripng_route.h
@@ -0,0 +1,53 @@
+/*
+ * RIPng daemon
+ * 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_ROUTE_H
+#define _ZEBRA_RIPNG_ROUTE_H
+
+struct ripng_aggregate
+{
+  /* Aggregate route count. */
+  unsigned int count;
+
+  /* Suppressed route count. */
+  unsigned int suppress;
+
+  /* Metric of this route.  */
+  u_char metric;		
+
+  /* Tag field of RIPng packet.*/
+  u_short tag;		
+};
+
+void
+ripng_aggregate_increment (struct route_node *rp, struct ripng_info *rinfo);
+
+void
+ripng_aggregate_decrement (struct route_node *rp, struct ripng_info *rinfo);
+
+int
+ripng_aggregate_add (struct prefix *p);
+
+int
+ripng_aggregate_delete (struct prefix *p);
+
+#endif /* _ZEBRA_RIPNG_ROUTE_H */