Reuseport reconnect delay

[Stebalien]

For some reason, reuseport is causing reconnects to be delayed by 15 seconds, at least on localhost on my machine. This, of course, causes the reconnect to fail because our timeout is 5 seconds.

[marten-seemann]

This might because you can't reuse the port until the TCP connection is actually gone, and not in TIME_WAIT any more. See libp2p/go-reuseport-transport#42 for a more detailed explanation.