(legacy) code cleanup rc.initial.banner

src/etc/rc.initial.banner

@@ -51,6 +51,8 @@ foreach($iflist as $ifname => $friendly) {
 	/* point to this interface's config */
 	$ifconf = $config['interfaces'][$ifname];
 	/* look for 'special cases' */
+	$class = "";
+	if (isset($ifconf['ipaddr'])) {
 		switch($ifconf['ipaddr']) {
 		case "dhcp":
 			$class = "/DHCP4";
@@ -64,10 +66,10 @@ foreach($iflist as $ifname => $friendly) {
 		case "l2tp":
 			$class = "/L2TP";
 			break;
-	default:
-		$class = "";
-		break;
 		}
+	}
+	$class6 = null;
+	if (isset($ifconf['ipaddrv6'])) {
 		switch($ifconf['ipaddrv6']) {
 		case "dhcp6":
 			$class6 = "/DHCP6";
@@ -85,6 +87,7 @@ foreach($iflist as $ifname => $friendly) {
 			$class6 = "/t6";
 			break;
 		}
+	}
 	$ipaddr = get_interface_ip($ifname);
 	$subnet = get_interface_subnet($ifname);
 	$ipaddr6 = get_interface_ipv6($ifname);