def tearDown(self):
        super(SimpleInstanceTest, self).tearDown()
        CONF.network_label_regex = self.orig_conf
        CONF.ip_start = None
def connection_made(self, transport):
        self.transport = transport
        # Here the buffer is intended to be copied, so that the outgoing buffer
        # won't be wrongly updated by next read
        self.buffer = bytearray(256 * 1024)