Hi Jorge,
I am not sure if I understood you 100%, but I think you are saying that you replaced the router on the
radio side.
If so, then all you need to do is to reconfigure your new router to forward the ports to the radio RRC's internal
IP number. Nothing else is needed to be changed and nothing at all at the control RRC side.
The radio RRC already has the RemoteRig DDNS setup (I assume), which just tells the control side (in the SIP contact)
your current public IP address. This doesn't make any difference what router is being used.
If you are using a VPN, then you would use the internal IP address as the SIP contact instead.
73,
Mitch DJ0QN / K7DX