[Python-Dev] test_multiprocessing: test_listener_client flakiness

[Trent Nelson]

> I just found the cause of the problem ten minutes ago:
> It seems that when a socket listens on the address "127.0.0.1" or
> "localhost", another process cannot connect to it using the machine's
> name (even from the same machine).
> The best seems to listen with the empty address "".

That doesn't seem right.  If that were the case, none of the hundreds of network-oriented tests would work either.  These all bind against ('localhost', 0) by default which seems to Do The Right Thing on all the platforms we have buildbots for.

        Trent.