Comment by trashb

No I think I wrote something in C (it was written a while ago) accepting the and then discarding the connection in such a way the RST/FIN was never send, making sure to clean the socket server side.

I guess a timeout will need to be adjusted/implemented on the bot's end I remember fixing a similar bug at work and it was quite involved. At any rate the very least the connection was made and discarded.

I guess the iptables solution would also work well and you would have a correctly working serverside.