after an admin restart (via web interface), on Mac OS X 10.5 tunnel, port remains in TIME_WAIT status and server quits with bind error (port already in use)
solved putting
if (!setsockopt($_[0], SOL_SOCKET, SO_REUSEADDR, 1)) {$p=$!; close $_[0]; return "Can't set socket option to SO_REUSEADDR: $p";}
in openserverport, after socket() and before bind()