diff --git a/setup_tunnel.sh b/setup_tunnel.sh
index cec6d56..35a6f96 100644
--- a/setup_tunnel.sh
+++ b/setup_tunnel.sh
@@ -1,5 +1,5 @@
 #!/bin/bash
-set -e
+#set -x
 OS_KEYPAIR_NAME=ovh_$(hostname -s)
 OS_MACHINE_NAME=gbv
 SERVER_RUNNING=false
@@ -25,11 +25,11 @@ source openrc.sh
 #
 # Prerequisites
 #
-if ! command -v ipcalc-ng &>/dev/null
-then
-echo >&2 "ipcalc-ng is required. Exiting."
-exit 1
-fi
+#if ! command -v ipcalc-ng &>/dev/null
+#then
+#echo >&2 "ipcalc-ng is required. Exiting."
+#exit 1
+#fi
 if ! command -v openstack &>/dev/null
 then
 echo >&2 "openstack is required. Exiting."
@@ -69,7 +69,7 @@ openstack keypair list|grep -q $OS_KEYPAIR_NAME
 RESULT=$?
 if [ $RESULT -eq 1 ]; then
 echo "Uploading SSH key to OpenStack..."
-nova keypair-add --pub_key ~/.ssh/id_ovh.pub $OS_KEYPAIR_NAME
+nova keypair-add --pub-key ~/.ssh/id_ovh.pub $OS_KEYPAIR_NAME
 fi
 #
 # Get flavor and image
@@ -94,7 +94,8 @@ SERVER_IPS="$(openstack server show gbv -f json|jq -r .addresses)"
 SERVER_IPS="${SERVER_IPS##Ext-Net=}"
 read -a SERVER_IPS <<< $SERVER_IPS
 SERVER_IPS[0]="${SERVER_IPS[0]%%,}"
-ipcalc-ng -c4 ${SERVER_IPS[0]} &>/dev/null
+#ipcalc-ng -c4 ${SERVER_IPS[0]} &>/dev/null
+grep -q '\.' <<< ${SERVER_IPS[0]}
 IS_IPV4=$?
 if [ $IS_IPV4 -eq 0 ]
 then