ddclient demo

Using ddclient causes errors in debian 12. Avoid log spamming by using the ddclient_C-IP.sh script. Script starts ddclient when ip change detected. Use cronjob loop for script execution.
ddclient script: h**ps://github.com/speefak/ddclient_C-ip
ipspec script: h**ps://github.com/speefak/ipspec/