Hello,
Could you please tell me, what is the firmware version of your LPU? After how much time does your LPU disappear, a couple of seconds or longer? Also, is your LPU using DHCP (red LED is blinking) or is it a static IP (white LED). In case of a static IP, could you verify that the first 3 numbers are equal and that the last number is different?
Best regards,
Jurrien