diff --git a/bgpd/bgp_open.h b/bgpd/bgp_open.h
new file mode 100644
index 0000000..af7505a
--- /dev/null
+++ b/bgpd/bgp_open.h
@@ -0,0 +1,69 @@
+/* BGP open message handling
+   Copyright (C) 1999 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.  */
+
+/* MP Capability information. */
+struct capability_mp
+{
+  u_int16_t afi;
+  u_char reserved;
+  u_char safi;
+};
+
+/* BGP open message capability. */
+struct capability
+{
+  u_char code;
+  u_char length;
+  struct capability_mp mpc;
+};
+
+/* Multiprotocol Extensions capabilities. */
+#define CAPABILITY_CODE_MP              1
+#define CAPABILITY_CODE_MP_LEN          4
+
+/* Route refresh capabilities. */
+#define CAPABILITY_CODE_REFRESH         2
+#define CAPABILITY_CODE_REFRESH_OLD   128
+#define CAPABILITY_CODE_REFRESH_LEN     0
+
+/* Cooperative Route Filtering Capability.  */
+#define CAPABILITY_CODE_ORF             3 
+#define CAPABILITY_CODE_ORF_OLD       130
+
+/* ORF Type.  */
+#define ORF_TYPE_PREFIX                64 
+#define ORF_TYPE_PREFIX_OLD           128
+
+/* ORF Mode.  */
+#define ORF_MODE_RECEIVE                1 
+#define ORF_MODE_SEND                   2 
+#define ORF_MODE_BOTH                   3 
+
+/* Dynamic capability.  */
+#define CAPABILITY_CODE_DYNAMIC        66
+#define CAPABILITY_CODE_DYNAMIC_LEN     0
+
+/* Capability Message Action.  */
+#define CAPABILITY_ACTION_SET           0
+#define CAPABILITY_ACTION_UNSET         1
+
+int bgp_open_option_parse (struct peer *, u_char, int *);
+void bgp_open_capability (struct stream *, struct peer *);
+void bgp_capability_vty_out (struct vty *, struct peer *);