--- /usr/src/sys/sys/sockio.h.orig	Mon Dec  9 10:11:52 2002
+++ /usr/src/sys/sys/sockio.h	Thu Aug 14 15:40:05 2003
@@ -74,6 +74,7 @@
 #define	SIOCDIFADDR	 _IOW('i', 25, struct ifreq)	/* delete IF addr */
 #define	SIOCAIFADDR	 _IOW('i', 26, struct ifaliasreq)/* add/chg IF alias */
 #define	SIOCGIFDATA	_IOWR('i', 27, struct ifreq)	/* get if_data */
+#define	SIOCSIFMACADDR	_IOWR('i', 86, struct ifreq)	/* set MAC addr */
 
 /* KAME IPv6 */
 /* SIOCAIFALIAS? */
