Even in a vanilla server I keep getting like 5 ip losing connection every minute and its spamming my console so if someone could tell me if there's a plugin or some other way to stop it please it's really spamming the console.
Looks like it may be causing internal errors with time outs. Are you port forwarding or do you host commercially on a server?
I run it off my computer with portforwarded http://prntscr.com/iqk7p EDIT by Moderator: merged posts, please use the edit button instead of double posting.
Then, I'm assuming its a personal server. Is it on a different machine or just the one you normally use?
Your getting that cause something is constantly pinging your server. Eg) Minecraft server stats or stuff like that