no public IP for API loadbalancer

[jampy]

I would like to restrict k8s API access to a Hetzner private network.

Using existing_network I can configure hetzner-k3s to attach all nodes to a pre-existing private network, fine.

Questions:

• is there an option to have hetzner-k3s automatically attach the API load balancer (created by hetzner-k3s) to the same network?
• is there an option to disable the public interface on the API load balancer, so that it is reachable via the private network only

or, alternatively:

• can I pre-configure a Hetzner load balancer (just as described above) and have hetzner-k3s reuse it, similarily to existing_network?