As designed the RemoteRig control end calls the radio box either on a static IP or dynamic DNS. I've run into a situation whereas a decent Internet connection is reversed. My home is virtually a Static IP and the remote is is CGNAT or double NAT. It seems that a rework of internal software could fix the issue. The home control unit would become a server and the remote radio control box would ping and connect by VNC allowing access to all the ports internal for audio and control. Any thoughts?
Bob W7RH