diff -urNd kvpnc-0.9.0.orig/src/ping_check.sh kvpnc-0.9.0/src/ping_check.sh
--- kvpnc-0.9.0.orig/src/ping_check.sh	2008-08-24 14:28:03.000000000 +0100
+++ kvpnc-0.9.0/src/ping_check.sh	2008-08-24 14:28:46.000000000 +0100
@@ -61,7 +61,7 @@
 if [  $QUIET -eq '1' ]; then
 echo -n "Ping sequence "$count": "
 fi
-if [[ -z `ping -c 1 -w 5 $PINGHOST 2>&1 | grep '1 received'` ]]; then
+if [ -z `ping -c 1 -w 5 $PINGHOST 2>&1 | grep '1 received'` ]; then
         fails=`expr $fails + 1`
 				if [  $QUIET -eq '1' ]; then
         echo "failed!"
@@ -78,7 +78,7 @@
 if [  $QUIET -eq '1' ]; then
 echo -n "PING failitures: "$fails" => "
 fi
-if [[ $fails > `expr $TEST_PING_COUNT - 1` ]]; then
+if [ $fails > `expr $TEST_PING_COUNT - 1` ]; then
         echo "PING failed!"
 
 else