HA Blue not responding

been running HA blue for a couple years now. yesterday it just seems to have gone offline. can’t ping it, can’t load it locally or remotely. power cycled it, but nada. weirdly, my automations are still running, so maybe just ethernet has gone away? red LED is on. i can see my ethernet port furiously trying to reach it, but it’s not responding. ideas?

an update. it now came back. no warning, no messages, just randomly ethernet connected just as randomly as it left. thoughts?