UDMP — Losing Connection

Starting about a month ago I am randomly losing connection to the internet on my UDMP. Modem still shows online.

They only way to get everything back up and running is a complete shutdown (not restart) of the UDMP and then restart it.

Frequency is increasing to a few times a week now.

I was hoping firmware update would help, so I updated yesterday but lost connection again overnight.

Any suggestions? I’ve had the UDMP for over a year with zero issues until now.