I set gatewaybind tailnet but it cant bind nothing listens

tailnet bind picks a Tailscale IP from your network interfaces (100.64.0.0/10). If the machine isn’t on Tailscale (or the interface is down), there’s nothing to bind to.
Fix:
Start Tailscale on that host (so it has a 100.x address), or
Switch to gateway.bind: "loopback" / "lan".
Note: tailnet is explicit. auto prefers loopback; use gateway.bind: "tailnet" when you want a tailnet-only bind.