UDP is connectionless. Connected UDP sockets are a OS construct, and don't influence anything that happens on the wire. If you "connect" a UDP socket, you don't

UDP is connectionless. Connected UDP sockets are a OS construct, and don't influence anything that happens on the wire. If you "connect" a UDP socket, you don't have to use sendto and recvfrom anymore, and all packets received and sent (via send/recv APIs) are targetting the same peer. It's kind of just sets up some routes in the kernel, but doesn't make anything stateful or reliable at the networking layer.