I was getting tired of removing my RR Control hardware and moving it to a second location when I had the "Brilliant" idea regarding buying a 2nd RR control unit. I had anticipated that this would be a challenge unless I made sure the other RR Control unit is disconnected. Can't help but wonder if there isn't a service that could act as a "Router" and somehow by controlling this online router, I could allow one or the other controller to have control by allowing a specific RR Control unit to access the RR DNS server. Perhaps in my next lifetime. Thank you for answering.