only save when update successful

ddns.sh

@@ -3,7 +3,6 @@
 DOMAIN="geek-blog.de"
 
 
-
 SCRIPTPATH="$( cd "$(dirname "$0")" >/dev/null 2>&1 ; pwd -P )"
 
 LAST_IP=$(cat /tmp/lastIp)
@@ -24,9 +23,12 @@ else
         echo "Last update IP matches WAN-IP - waiting for DNS to propagate changes."
     else
         echo "IP mismatch - trying to update A-record(s)..."
-        echo "${WAN_IP}" > /tmp/lastIp
-        #$SCRIPTPATH/unitedDomainsCtrl.sh geek-blog.de ${WAN_IP}
-        $SCRIPTPATH/unitedDomainsCtrl.sh *.geek-blog.de ${WAN_IP}
-
+        #$SCRIPTPATH/unitedDomainsCtrl.sh ${DOMAIN} ${WAN_IP}
+        $SCRIPTPATH/unitedDomainsCtrl.sh *.${DOMAIN} ${WAN_IP}
+        
+        if [ "$?" == "0" ]; then
+            echo "Save UPDATE_IP."
+            echo "${WAN_IP}" > /tmp/lastIp
+        fi
     fi
 fi