Typically, the IP stack places the port in TIMEWAIT after the listening process has exited, in order to ensure that packets that were in flight on the network a

Typically, the IP stack places the port in TIMEWAIT after the listening process has exited, in order to ensure that packets that were in flight on the network at the time of exit has a chance to dissipate before the next program starts. But, when you say "I am OK with this co-existing", you can listen to a port that is in TIMEWAIT, and quick restart is then possible.