Roland, Am I to understand you're bothered that the Kernel shows the tunl0 interface?
* You simply have to reboot the machine with the script removed OR run 'modprobe -r ipip'.
* These routes are invalid: up ip rule add to 44.0.0.0/9 table 44 priority 44 up ip rule add to 44.128.0.0/10 table 44 priority 44
* Do you have ampr-ripd or rip44d running?
- https://wiki.ampr.org/wiki/Setting_up_a_gateway_on_Linux
- https://wiki.ampr.org/wiki/Ubuntu_Linux_Gateway_Example
- https://wiki.ampr.org/wiki/Startampr#Script
- KB3VWG