diff --git a/bgpd/bgp_attr.h b/bgpd/bgp_attr.h
index 000ceaa..0bbb912 100644
--- a/bgpd/bgp_attr.h
+++ b/bgpd/bgp_attr.h
@@ -92,6 +92,9 @@
 
   uint16_t			encap_tunneltype;	/* grr */
   struct bgp_attr_encap_subtlv *encap_subtlvs;		/* rfc5512 */
+
+  /* route tag */
+  u_short tag;
 };
 
 /* BGP core attribute structure. */