--- /usr/include/net/if.h	2003-07-18 10:04:05.000000000 -0500
+++ if.h	2003-06-24 18:11:31.000000000 -0500
@@ -141,6 +141,7 @@
 	short int ifru_flags;
 	int ifru_ivalue;
 	int ifru_mtu;
+	int ifru_gid;
 	struct ifmap ifru_map;
 	char ifru_slave[IFNAMSIZ];	/* Just fits the size */
 	char ifru_newname[IFNAMSIZ];
@@ -156,6 +157,7 @@
 # define ifr_flags	ifr_ifru.ifru_flags	/* flags		*/
 # define ifr_metric	ifr_ifru.ifru_ivalue	/* metric		*/
 # define ifr_mtu	ifr_ifru.ifru_mtu	/* mtu			*/
+# define ifr_gid	ifr_ifru.ifru_gid	/* gid			*/
 # define ifr_map	ifr_ifru.ifru_map	/* device map		*/
 # define ifr_slave	ifr_ifru.ifru_slave	/* slave device		*/
 # define ifr_data	ifr_ifru.ifru_data	/* for use by interface	*/