diff --git a/scripts/ctrl-none.sh b/scripts/ctrl-none.sh
index 74349e3..fb8d2a0 100755
--- a/scripts/ctrl-none.sh
+++ b/scripts/ctrl-none.sh
@@ -1,9 +1,8 @@
 #! /bin/bash
 controller=""
-switches=`ifconfig -a | grep sw |grep -v eth | awk '{print $1}'`
-
+switches=`sudo ovs-vsctl list-br`
 function host2ip (){
-   ip=`grep $1 /etc/hosts |grep -v "ip6"|  awk '{print $1}'`
+   ip=`getent hosts $1 |  awk '{print $1}' | tail -n 1`
    echo $ip
 }