--- elwix/config/etc/uboot/rc.d/019.dwds_relay_rstchan.stop	2014/09/15 19:06:52	1.2
+++ elwix/config/etc/uboot/rc.d/019.dwds_relay_rstchan.stop	2015/03/05 23:44:05	1.2.2.1
@@ -2,6 +2,8 @@
 
 RST_IFACE="wlan1"
 
+[ -z "$RST_IFACE" ] && exit
+
 echo "Reset relay channel interface $RST_IFACE for DWDS-Client->DWDS-Base ..."
 
 ifconfig $RST_IFACE channel -1