I disconnected the IR blaster and still both are reacting (network control?).
The M1 has an internal IR Blaster that floods the surrounding area, nothing to do with the network, As Max says, change the remote address on one of them. If you can't find a built-in remote for the new address I can do you a Custom Remote.
just installed a slingbox m1 to my TiVo. when I use it both of my TiVo's respond to the remote. I disconnected the IR blaster and still both are reacting (network control?). Both TiVo's are premiers. This is unworkable. Can I change the settings or distinguish between the TiVo's or do I just return it?