RancherOS / container with PPPoE?

I try to replace my home router with a RancherOS mini pc with 3 nics. Dockre use one network interface. Is it possible to use another interface to set up a dsl connection? Or is a PPPoE connection possible from inside a container?

Should be done with a system-docker container and –net=host? Any suggestions?

I also want to know

Anyone with progress here?
PPPoE would be nice because it’s commonly used here

I found that docker issue / discussion