I’ve discovered it just a few days ago and now use it on all my machines

For anyone trying this, make sure you do not have “- TS_USERSPACE=false” in your yaml from previous experimentation. After removing this, it works for me too.

In the documentation they say to add sysctl entries, it is possible in docker compose like so:

tailscale:
    sysctls:
      - net.ipv4.ip_forward=1
      - net.ipv6.conf.all.forwarding=1

But it does not seem to make a difference for me. Does anyone know why these would not be required in this specific setup?