local peer actively calls close, the TCP connection in this state enters the TIME_WAIT state, and the TCP connection in this state cannot immediately establish a new connection with the same quad, that is, the local port occupied by the initiator of the active close cannot be reassigned during the TIME_WAIT. Because the TIME_WAIT state duration is 2MSL, this ensures that the old packets in the old TCP connection duplex link disappear due to expiration (more than MSL). After that, a new connection can be established with the same quad without two connection data errors.

some systems have this limitation