Tailscale is available as packages even on the aarch64 platform (RPi and such arm64 platforms).

1. Add Tailscale’s package signing key and repository

   curl -fsSL https://pkgs.tailscale.com/stable/ubuntu/focal.gpg | sudo apt-key add - curl -fsSL https://pkgs.tailscale.com/stable/ubuntu/focal.list | sudo tee /etc/apt/sources.list.d/tailscale.list

2. Install Tailscale

   sudo apt-get update sudo apt-get install tailscale

3. Authenticate and connect your machine to your Tailscale network

   sudo tailscale up

   To also expose you local subnet and use this endpoint as a gateway. Use a comma to separate multiple routes.

   sudo tailscale up --advertise-routes=10.0.1.0/24

4. Visit the admin console and authorize your new endpoint. If you signed in with a @gmail.com address, it is automatically authorized. (Note: You will need to occasionally reauthenticate unless you disable key expiry.)

   

5. Obtain your Tailscale IP address

   ip addr show tailscale0