Index: head/sys/dev/ex/if_ex.c
===================================================================
--- head/sys/dev/ex/if_ex.c
+++ head/sys/dev/ex/if_ex.c
@@ -823,12 +823,6 @@
 	DODEBUG(Start_End, printf("%s: ex_ioctl: start ", ifp->if_xname););
 
 	switch(cmd) {
-		case SIOCSIFADDR:
-		case SIOCGIFADDR:
-		case SIOCSIFMTU:
-			error = ether_ioctl(ifp, cmd, data);
-			break;
-
 		case SIOCSIFFLAGS:
 			DODEBUG(Start_End, printf("SIOCSIFFLAGS"););
 			EX_LOCK(sc);
@@ -850,8 +844,8 @@
 			error = ifmedia_ioctl(ifp, ifr, &sc->ifmedia, cmd);
 			break;
 		default:
-			DODEBUG(Start_End, printf("unknown"););
-			error = EINVAL;
+			error = ether_ioctl(ifp, cmd, data);
+			break;
 	}
 
 	DODEBUG(Start_End, printf("\n%s: ex_ioctl: finish\n", ifp->if_xname););
Index: head/sys/dev/ixgb/if_ixgb.c
===================================================================
--- head/sys/dev/ixgb/if_ixgb.c
+++ head/sys/dev/ixgb/if_ixgb.c
@@ -525,11 +525,6 @@
 		goto out;
 
 	switch (command) {
-	case SIOCSIFADDR:
-	case SIOCGIFADDR:
-		IOCTL_DEBUGOUT("ioctl rcv'd: SIOCxIFADDR (Get/Set Interface Addr)");
-		ether_ioctl(ifp, command, data);
-		break;
 	case SIOCSIFMTU:
 		IOCTL_DEBUGOUT("ioctl rcv'd: SIOCSIFMTU (Set Interface MTU)");
 		if (ifr->ifr_mtu > IXGB_MAX_JUMBO_FRAME_SIZE - ETHER_HDR_LEN) {
@@ -610,8 +605,8 @@
 		}
 		break;
 	default:
-		IOCTL_DEBUGOUT1("ioctl received: UNKNOWN (0x%X)\n", (int)command);
-		error = EINVAL;
+		error = ether_ioctl(ifp, command, data);
+		break;
 	}
 
 out:
Index: head/sys/dev/nxge/if_nxge.c
===================================================================
--- head/sys/dev/nxge/if_nxge.c
+++ head/sys/dev/nxge/if_nxge.c
@@ -1623,12 +1623,6 @@
 	}
 
 	switch(command) {
-	    /* Set/Get ifnet address */
-	    case SIOCSIFADDR:
-	    case SIOCGIFADDR:
-	        ether_ioctl(ifnetp, command, data);
-	        break;
-
 	    /* Set ifnet MTU */
 	    case SIOCSIFMTU:
 	        retValue = xge_change_mtu(lldev, ifreqp->ifr_mtu);
@@ -1713,7 +1707,7 @@
 	        break;
 
 	    default:
-	        retValue = EINVAL;
+	        retValue = ether_ioctl(ifnetp, command, data);
 	        break;
 	}
 	return retValue;
Index: head/sys/dev/vxge/vxge.c
===================================================================
--- head/sys/dev/vxge/vxge.c
+++ head/sys/dev/vxge/vxge.c
@@ -3573,12 +3573,6 @@
 		return (EBUSY);
 
 	switch (command) {
-		/* Set/Get ifnet address */
-	case SIOCSIFADDR:
-	case SIOCGIFADDR:
-		ether_ioctl(ifp, command, data);
-		break;
-
 		/* Set Interface MTU */
 	case SIOCSIFMTU:
 		err = vxge_change_mtu(vdev, (unsigned long)ifr->ifr_mtu);