diff --git a/ccw_init b/ccw_init
index 3703eaf..caa99d2 100644
--- a/ccw_init
+++ b/ccw_init
@@ -1,6 +1,7 @@
 #! /bin/sh
 
 [ -z "$DEVPATH" ] && exit 0
+[ -z "$DRIVER" ] && exit 0
 [ "$SUBSYSTEM" != "ccw" ] && exit 0
 
 [ -e /etc/ccw.conf ] && MODE="dracut" || MODE="normal"
@@ -78,6 +79,7 @@ elif [ $MODE = "normal" ]; then
 	    NETTYPE=$(sed -nr "/^\[ethernet\]/ { :l /^s390-nettype[ ]*=/ { s/.*=[ ]*//; p; q;}; n; b l;}" $CONFIG_FILE)
 	    SUBCHANNELS=$(sed -nr "/^\[ethernet\]/ { :l /^s390-subchannels[ ]*=/ { s/.*=[ ]*//; p; q;}; n; b l;}" $CONFIG_FILE | sed -e "s/;/,/g" -e "s/,$//")
 	    LAYER2=$(sed -nr "/^\[ethernet-s390-options\]/ { :l /^layer2[ ]*=/ { s/.*=[ ]*//; p; q;}; n; b l;}" $CONFIG_FILE)
+	    PORTNO=$(sed -nr "/^\[ethernet-s390-options\]/ { :l /^portno[ ]*=/ { s/.*=[ ]*//; p; q;}; n; b l;}" $CONFIG_FILE)
 	else
 	    exit 1
 	fi
@@ -115,6 +117,10 @@ if [ "$NETTYPE" = "ctc" -a -n "$CTCPROT" ]; then
 	OPTIONS="$OPTIONS protocol=$CTCPROT"
 fi
 
+if [ -n "$PORTNO" ]; then
+	OPTIONS="$OPTIONS portno=$PORTNO"
+fi
+
 # SUBCHANNELS is only set on mainframe ccwgroup devices
 [ -z "$SUBCHANNELS" -o -z "$NETTYPE" ] && exit 0
 if [ "$NETTYPE" = "ctc" ]; then
@@ -148,8 +154,6 @@ if [ -e $SYSDIR/online ]; then
     [ "$on" = "1" ] && exit 0
 fi
 
-DRIVER=$(readlink $DEVPATH/driver)
-DRIVER=${DRIVER##*/}
 if [ "$DRIVER" = "lcs" -a "$NETTYPE" = "ctc" ]; then
     echo "$CHANNEL" > /sys/bus/ccw/drivers/lcs/unbind
     echo "$CHANNEL" > /sys/bus/ccw/drivers/ctcm/bind