diff --git a/debian/wit-network-config.preinst b/debian/wit-network-config.preinst
index d17ce56..077c832 100755
--- a/debian/wit-network-config.preinst
+++ b/debian/wit-network-config.preinst
@@ -16,15 +16,15 @@ set -e
 
 case "$1" in
     install|upgrade)
-	source /etc/wit-net.conf
+ 	export DOMAINNAME=${HOSTNAME#*.}
+	export LOOPBACKv4=$(dig +short ${HOSTNAME%%.*}.loopback.${HOSTNAME#*.})
+	export TIER_ID=$(echo $LOOPBACKv4 | cut -d . -f 3)
+	export NODE_ID=$(echo $LOOPBACKv4 | cut -d . -f 4)
+
 	if [ -z $LOOPBACKv4 ]; then
 	    echo "LOOPBACK NOT CONFIGURED, aborting..."
 	    exit 2
 	fi
-	if [[ $LOOPBACKv4 != "10.1."* ]]; then
-	    echo "only 10.1.x.y loopbacks supported at the moment"
-	    exit 3
-	fi
         systemctl stop systemd-networkd.socket
         systemctl stop systemd-networkd.service
         systemctl stop systemd-networkd-wait-online