#!/bin/bash
 
IP=192.168.1.1
USER=admin

# change password here
#PW=
 
OLD_IP=`wget http://checkip.dyndns.org/ -O /dev/stdout 2>/dev/null | sed "s/.*Current IP Address: \([0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\).*/\1/"`
echo "Alte IP: $OLD_IP"
curl http://$USER:$PW@$IP/Forms/DiagADSL_1 -d "LineInfoDisplay=&DiagDSLDisconnect=PPPoE+Trennung"
NEW_IP=`wget http://checkip.dyndns.org/ -O /dev/stdout 2>/dev/null | sed "s/.*Current IP Address: \([0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\).*/\1/"`
echo "Neue IP: $NEW_IP"