Why am I still receiving incoming connection attempts after I have already closed BitTorrent?
In BitTorrent, peers disconnect from the swarm without notifying every other peer in the swarm because it would be inefficient to do so, and also because peers rarely have the IPs of every other peer in the swarm (which would make it impossible to do in the first place). Because most BitTorrent clients cache peer information, when they try to connect to a particular peer in their cache, they may end up attempting to connect to a peer that has already disconnected since they last received the peer’s IP and port number. This phenomenom is what you are observing when you see incoming connection attempts after you’ve exited BitTorrent. Depending on how many peers had a copy of your IP and port number in their peer cache, this can take up to several weeks to subside. Having DHT enabled may magnify the effects, as there are many more peers using DHT than there are connected to any one particular torrent swarm (so more users may have your IP and port number by the time you disconnect). Althou
