VPC : VMs may access this static nat ip

patches/systemvm/debian/config/opt/cloud/bin/vpc_staticnat.sh

@@ -46,7 +46,7 @@ static_nat() {
 
   # shortcircuit the process if error and it is an append operation
   # continue if it is delete
-  (sudo iptables -t nat $op  PREROUTING -i $ethDev -d $publicIp -j DNAT \
+  (sudo iptables -t nat $op  PREROUTING -d $publicIp -j DNAT \
            --to-destination $instIp &>>  $OUTFILE || [ "$op" == "-D" ]) &&
   # add mark to force the package go out through the eth the public IP is on
   #(sudo iptables -t mangle $op PREROUTING -s $instIp -j MARK \