// be ignored; see tryClose comment.
        if( socket == null ) {
            socket = new DatagramSocket( lport, laddr );
            thread = new Thread( this, "JCIFS-NameServiceClient" );
            thread.setDaemon( true );
            thread.start();
        }
    }
    void tryClose() {
        synchronized( LOCK ) {

            /* Yes, there is the potential to drop packets