http://lpoaj76nfopd5lpinbskyqtroppamrzhhay3g4vvjm75st6ger34lbyd.onion/posts/2022/12/mystery-network-issue.html
We were at uni at the time, so couldn't look into't immediately, as the machine in question wasn't reachable over the network, either. So, once we could physically access't, we checked what was going on, n't turned out the machine was running as expected, except for the fact't couldn't build any network connectiona the outside world.