Can only keep one board connected

[MSG56]

I'm using HS3 and recently starting using the Arduino plugin. Once I had my first board up and running a few days later I connected a second board. Once I had board 2 running, board 1 lost connection. The system stayed this way for several days. Once I cycled power on board 1, it reconnected and about a minute later board 2 lost connection. Both boards are genuine UNO boards with genuine shield II. Next, I cycled power on board 2, it reconnected, and less than a minute later board 1 disconnected. So, if a board is not connected and I cycle it's power, it reconnects and then the other board disconnects. No sure how to resolve this.

[drhtmal]

Did you assign each board a unique IP address and MAC?

[MSG56]

Did you assign each board a unique IP address and MAC?

Yes.

Here's the weird thing. About 10 minutes after posting the above, both units connected and have stayed connected for the past 2 hours. That is the first time they have both been connected for more than a few minutes.