I have an interesting problem here with a Batch 3 S9:

1. I have set it for a static IP of 192.168.1.60
2. I have set up 3 mining pools
3. It operates as expected for a few hours, maybe up to a day.

Then, seemingly on its own, it changes its static IP address to something different (like 192.168.1.203) and changes just the first mining pool to f2pool or  peercoin pool (not my pools or credentials). Pools 2 and 3 remain untouched. I change the settings back to 192.168.1.60, and reset the first pool, but several hours later its back to some random IP address and the first pool has been changed again to something.

Has anyone else experienced something similar? I've had this happen 3 or 4 times now over the past few days. I keep changing the IP and pool information back, but in less then a day that miner is back on some random IP address and mining at some random pool. I've reflashed the firmware but that didn't help. I've reset the S9 to its factory settings by keeping the RESET button pressed for several seconds, then re-configuring, but that didn't seem to help either.

I don't know what could be causing this, or how to stop these changes from happening. I have several other S9 units on the same network and none of them exhibit this behavior.