Can't use exit node on android tailscale v1.6

I can’t use the Tailscale v1.6 Exit Node on my Android Device.

There is no Exit Node setting in Settings.

From what I have noticed, it appears only when at least one device on your network is marked as exit node.

If the “Relay traffic via…” option is missing from the menu, you are either on a version older than v1.6, or there are no exit nodes on your network.