Common router id.
diff --git a/zebra/router-id.h b/zebra/router-id.h
new file mode 100644
index 0000000..7f7a8c3
--- /dev/null
+++ b/zebra/router-id.h
@@ -0,0 +1,43 @@
+/*
+ * Router ID for zebra daemon.
+ *
+ * Copyright (C) 2004 James R. Leu
+ *
+ * This file is part of Quagga routing suite.
+ *
+ * Quagga 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.
+ *
+ * Quagga 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 _ROUTER_ID_H_
+#define _ROUTER_ID_H_
+
+#include <zebra.h>
+
+#include "memory.h"
+#include "prefix.h"
+#include "zclient.h"
+#include "if.h"
+
+extern void router_id_add_address(struct connected *);
+extern void router_id_del_address(struct connected *);
+extern void router_id_init(void);
+extern void router_id_write(struct vty *);
+extern void router_id_get(struct prefix *);
+
+extern void zread_router_id_add(struct zserv *, u_short);
+extern void zread_router_id_delete(struct zserv *, u_short);
+
+#endif