diff --git a/viirb-3-configure-vpnendpoint.sh b/viirb-3-configure-vpnendpoint.sh
index 4c45fdd..d03b90e 100755
--- a/viirb-3-configure-vpnendpoint.sh
+++ b/viirb-3-configure-vpnendpoint.sh
@@ -3,17 +3,17 @@
 # See https://ungleich.ch/u/products/viirb-ipv6-box/
 
 if [ $# -ne 3 ]; then
-    echo "$0 viirb-id public-key your-dot-cdist [stages]"
+    echo "$0 your-dot-cdist viirb-id public-key"
+    echo "    your-dot-cdist: path to YOUR ungleich-dot-cdist repo"
     echo "    viirb-id: number in decimal format"
     echo "    wireguard public key"
-    echo "    your-dot-cdist: path to YOUR ungleich-dot-cdist repo"
     exit 1
 fi
 
 set -x
+dot_cdist=$1; shift
 id=$1; shift
 public_key=$1; shift
-dot_cdist=$1; shift
 
 hex_id=$(printf "%0.2x\n" "$id")
 viirb_hostname=viirb${id}
@@ -21,6 +21,9 @@ viirb_hostname=viirb${id}
 prefix_base=2a0a:e5c1:3
 my_prefix=${prefix_base}${hex_id}
 my_network=${my_prefix}::/48
+my_wireguard_ip=${my_prefix}::42
+my_lan_ip=${my_prefix}:cafe::42
+my_wifi_ip=${my_prefix}:7ea::42
 
 vpn_endpoint_host=vpn-2a0ae5c1300.ungleich.ch
 
@@ -50,3 +53,10 @@ git pull
 git push
 
 cdist config -vv -j8 ${vpn_endpoint_host} -c ${dot_cdist}
+
+# Test that the VPN connection is established
+sleep 10
+
+ping -c3 ${my_wireguard_ip}
+ping -c3 ${my_lan_ip}
+ping -c3 ${my_wifi_ip}