diff --git a/files/keepalive.exit.sh b/files/keepalive.exit.sh
new file mode 100644
index 0000000..19c28dc
--- /dev/null
+++ b/files/keepalive.exit.sh
@@ -0,0 +1,51 @@
+#!/bin/bash
+# Version 1.6
+# Parameter setzen
+GATEWAY1ext=185.66.193.105
+GATEWAY2ext=185.66.193.106
+GATEWAY1=10.188.255.5
+GATEWAY2=10.188.255.6
+GATEWAY1v6=2a03:2260:121::255:5
+GATEWAY2v6=2a03:2260:121::255:6
+IP=/sbin/ip
+PING=/bin/ping
+BATCTL=/usr/local/sbin/batctl
+
+#if [ "hostname = troisdorf1 | troisdorf2" ]
+if [ $(hostname) = "troisdorf1" ] || [ $(hostname) = "troisdorf2" ]
+    then
+        DEFAULT_GATEWAY=$GATEWAY1
+	DEFAULT_GATEWAYext=$GATEWAY1ext
+        FALLBACK_GATEWAY=$GATEWAY2
+	FALLBACK_GATEWAYext=$GATEWAY2ext
+	DEFAULT_GATEWAYv6=$GATEWAY1v6
+	FALLBACK_GATEWAYv6=$GATEWAY2v6
+    else
+        DEFAULT_GATEWAY=$GATEWAY2
+	DEFAULT_GATEWAYext=$GATEWAY2ext
+        FALLBACK_GATEWAY=$GATEWAY1
+        FALLBACK_GATEWAYext=$GATEWAY1ext
+	DEFAULT_GATEWAYv6=$GATEWAY2v6
+	FALLBACK_GATEWAYv6=$GATEWAY1v6
+
+fi
+
+if $PING -c 1 $DEFAULT_GATEWAYext
+        then
+                $IP route replace default via $DEFAULT_GATEWAY table 42
+                $IP -6 route replace default via $DEFAULT_GATEWAYv6 table 42
+                $BATCTL gw server 100Mbit/100Mbit
+                echo "Gateway erreichbar"
+        else
+        if $PING -c 1 $FALLBACK_GATEWAYext
+            then
+                $IP route replace default via $FALLBACK_GATEWAY table 42
+                $IP -6 route replace default via $FALLBACK_GATEWAYv6 table 42
+                $BATCTL gw server 80Mbit/80Mbit
+                echo "Nun FALLBACK_GATEWAY"
+            else
+                $BATCTL gw off
+                #Kein Gateway erreichbar, batctl gw off
+        fi
+fi
+
diff --git a/files/keepalive.exit.sh.j2 b/files/keepalive.exit.sh.j2
new file mode 100644
index 0000000..6a4443c
--- /dev/null
+++ b/files/keepalive.exit.sh.j2
@@ -0,0 +1,10 @@
+#!/bin/bash
+
+ping -q -I {{ sn_ffrl_IPv4 }} 8.8.8.8 -c 4 -i 1 -W 5 >/dev/null 2>&1
+
+if test $? -eq 0; then
+    /usr/local/sbin/batctl gw server 100Mbit/100Mbit
+else
+    /usr/local/sbin/batctl gw off
+fi
+
diff --git a/files/l2tp_backbone.sh.exit.j2 b/files/l2tp_backbone.sh.exit.j2
index 1e3f53d..f9bca4c 100644
--- a/files/l2tp_backbone.sh.exit.j2
+++ b/files/l2tp_backbone.sh.exit.j2
@@ -54,6 +54,8 @@ $ip -6 addr add $communitynetworkv6$octet3rd:${localserver#$communityname}/64 de
 $alfred -i bat0 > /dev/null 2>&1 &
 /bin/sleep 15
 $batadv -i bat0 -s > /dev/null 2>&1 &
-/usr/sbin/service bind9 restart
+/bin/systemctl restart isc-dhcp-server
+/bin/systemctl restart bind9
 #/usr/local/sbin/batctl gw client 3
 /usr/local/sbin/batctl gw server 100Mbit/100Mbit
+
diff --git a/files/sn_startup.exit.sh.j2 b/files/sn_startup.exit.sh.j2
index 7e40342..ba45058 100644
--- a/files/sn_startup.exit.sh.j2
+++ b/files/sn_startup.exit.sh.j2
@@ -53,24 +53,12 @@ done
 
 sleep 5
 
-# stop tunneldigger
-/bin/systemctl disable tunneldigger
-/bin/systemctl stop tunneldigger
-
 # restart bird
 /bin/systemctl start bird
 /bin/systemctl start bird6
 /bin/systemctl enable bird
 /bin/systemctl enable bird6
 
-# stop radvd
-/bin/systemctl disable radvd
-/bin/systemctl stop radvd
-
-# restart DHCP
-/bin/systemctl disable isc-dhcp-server
-/bin/systemctl stop isc-dhcp-server
-
 # Start tunneldigger
 /bin/systemctl restart tunneldigger
 /bin/systemctl enable tunneldigger
@@ -79,8 +67,4 @@ sleep 5
 /bin/systemctl restart radvd
 /bin/systemctl enable radvd
 
-# restart DHCP
-/bin/systemctl restart isc-dhcp-server
-/bin/systemctl enable isc-dhcp-server
-
 exit 0
diff --git a/install.sn.yml b/install.sn.yml
index c846a79..eba6c99 100644
--- a/install.sn.yml
+++ b/install.sn.yml
@@ -196,7 +196,13 @@
       copy: src=./files/{{ item }} dest=/opt/freifunk owner=root group=root mode=0500
       with_items: check_gw_script
       register: check_gw
-#      when: sn_exit is undefined
+      when: sn_exit is undefined
+
+    - name: Check gateway / keepalive script
+      template: src=./files/keepalive.exit.sh.j2 dest=/opt/freifunk/keepalive.sh owner=root group=root mode=0500
+      register: check_gw
+      when: sn_exit is defined
+
     - name: Add cron job with check gateway script
       cron: name=check_gw job="/opt/freifunk/keepalive.sh > /dev/null 2>&1" user="root" 
       when: check_gw.changed