I'm working in an environment where I SSH into a remote machine and then SSH into other machines in the LAN (of which there are two). Overnight, one of the machines now ssh errors with "No route to host" and ping errors with "Destination Host Unreachable." I checked the router status and both machines still have local IPs, and my understanding is that means that they are still communicating to some extent.
Any advice for how to diagnose this without going to the server physically, as a networking noob?
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