--- sys/dev/usb/if_cdce.c	2008-09-15 11:37:58.889612017 +0200
+++ new_sys/dev/usb/if_cdce.c	2008-09-15 11:47:12.612916725 +0200
@@ -283,10 +283,13 @@
 	if (!ue || usbd_get_string(dev, ue->iMacAddress, eaddr_str,
 	    sizeof(eaddr_str))) {
 		/* Fake MAC address */
+		/* MAC addr should be static for every device! */
 		device_printf(sc->cdce_dev, "faking MAC address\n");
 		eaddr[0]= 0x2a;
-		memcpy(&eaddr[1], &ticks, sizeof(u_int32_t));
-		eaddr[5] = (u_int8_t)device_get_unit(sc->cdce_dev);
+		for (i=1;i<ETHER_ADDR_LEN;i++) {
+			eaddr[i] = eaddr[0]+i;
+			}
+		/* now, we have a new MAC: 2a2b2c2d2e2f */
 	} else {
 		int i;