diff --git a/include/net/ip_tunnels.h b/include/net/ip_tunnels.h
index 3d4ca4df12093dff859001f160287aad17bc089c..95056796657cf9b11c24ae1497f1d5c01a9fd178 100644
--- a/include/net/ip_tunnels.h
+++ b/include/net/ip_tunnels.h
@@ -58,6 +58,7 @@ struct ip_tunnel_key {
 /* Flags for ip_tunnel_info mode. */
 #define IP_TUNNEL_INFO_TX	0x01	/* represents tx tunnel parameters */
 #define IP_TUNNEL_INFO_IPV6	0x02	/* key contains IPv6 addresses */
+#define IP_TUNNEL_INFO_BRIDGE	0x04	/* represents a bridged tunnel id */
 
 /* Maximum tunnel options length. */
 #define IP_TUNNEL_OPTS_MAX					\