http://bugs.winehq.org/show_bug.cgi?id=26031
--- Comment #26 from Bruno Jesus 00cpxxx@gmail.com 2012-07-24 19:43:59 CDT --- I finally ended my research about this bug. IMO it's really upstream, it's a linux kernel implementation characteristic. It does not happen in OSX nor in PC-BSD. When the application dies the kernel hold the port and does not allows anyone to reuse it. It can be tested not only with wine but with linux applications like socat.