Yeah these are great pieces of software and hardware, and AVM is a decent company as well. Although I personally prefer to hang up a Ubiquiti WAP.

I wanted to say there used to be Freetz which was neat but they ensured this wouldn't work anymore. But I learned it is continued in form of Freetz-NG!

My ISP (Freedom Internet) allows me to rent a modem for 2 EUR per month. A steal.

https://github.com/Freetz-NG/freetz-ng