This is a picture of nodes in my toy DHT getting killed off one by one this morning. Nodes get killed when someone pings them and there's no response. I wouldn't expect these nodes to reply since I made them up during testing with fake IDs and IPs, but I found out this lovely fake IP 1.1.1.1 is actually a very real IP used by everyone's favorite DNS provider and internet policeman CloudFlare. Oops!