Me and 3 friends are running a small tekkit server, nothing special. However looking at the console, I noticed a lot of abnormal overload errors, never noticed them before. They started two hours after I disconnected, and lasted about 27 minutes, and stopped when another ip (not any ip of anyone on the server though) lost connection.
Looking through the logs more, I found many instances of this ip (201.130.246.49), on many different ports, losing connection, but never actually joining the server.
Uploaded a few lines around the end of the log (http://pastebin.com/jqQaYTu2), the only two plugins running are essentials, essentials spawn, and treeassist.
Anyone know if this is an issue, or some odd side-effect of a plugin?