diff --git a/files/qemu-ifup-public b/files/qemu-ifup-public
index 49eea54..527868e 100755
--- a/files/qemu-ifup-public
+++ b/files/qemu-ifup-public
@@ -37,8 +37,8 @@ arp -i ${IFACE} -Ds 169.254.0.1 ${IFACE} netmask 255.255.255.255 pub
 IFS=',' read -ra IPS <<< "$IP"
 for IP in "${IPS[@]}"; do
    echo $IP
-   if [[ $IP =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]/([0-9]{2})$ ]]; then			### we got a IPv4 prefix < maxprefixv4
-echo matched ${BASH_REMATCH[1]}
+   if [[ $IP =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}/([0-9]{2})$ ]]; then			### we got a IPv4 prefix < maxprefixv4
+        echo matched ${BASH_REMATCH[1]}
         if [ ${BASH_REMATCH[1]} -lt $maxprefixv4 ]; then
           echo "we don't support such a big customer net?"
           continue