A player joins every once in a while(using multiple accounts/ip) and starts to insult others and lags the server with an unknown method to me(log attached, I am assuming it is some type of hack client/exploit)
It is not a server side bug because he claims to be doing so and bypasses the ban and comes back
From my understanding it is related to forcing the server to generate chunks that are millions of blocks away? What exploit is this and how can I prevent?