It's been a strange day in MT-Land.
We had a substantial snow storm overnight.
At 7:40am a remote hEX dropped off the wireguard tunnel. I was still able to ping the router from its public IP address and the users there still had Internet access.
I tried pinging the both the WG and the LAN private addresses and did not get a response. Unable to use Winbox. Local hEX stopped WG handshaking.
I had someone there (100 miles away) reboot and it worked for 40 minutes, then the same symptoms.
Had them reboot again and it stayed working.
Now, 6 hours later, same exact symptoms at a different site (2 miles from the first remote site).
I can ping the public address and the devices at the site still have Internet access, but I have no access to the hEX.
When I regained access to the first hEX, I opened an SSH session to it I saw startup messages that the DHCP-Client lost its IP address on ether1. Ether1 is the WAN port on the hEX and connected to the cable internet provider's modem.
Any suggestions on how to continue troubleshooting this?