By the cold light of day, and I do mean cold because it is 14ºF right now, I quickly found why the Linux Mint box’s services were offline. The port it was connected to on the gigabit switch is no longer working. Kinda weird but at least a quick and cheap fix since there were a couple of spare ports.
Put some tape over the bad port. If any others go bad I’ll replace the switch.
Current mental state: relieved. 😅