code: func (n *Networking) GetForwardableNetHostIP() (net.IP, error) {
  	net, err := n.GetForwardableNet()
  	if err != nil {
  		return nil, err
  	}
  	return net.runtime.HostIP, nil
  }
docs: // GetForwardableNetHostIP uses GetForwardableNet() to determine the default network and then
  // returns the Host's IP of that network.