Comment 4 for bug 405745

Weird.

Did you notice a change in the behavior recently or is it the first time you try running selftest ?

The traceback points at a socket.close() which run after a socket.shutdown(socket.SHUT_RDWR)....

So I can hardly imagine another way to shut down the server and I can't imagine why that fails on AIX...
but if that's the case, we'll have to turn that bug into a duplicate of #417053...