def tearDown(self):
        super(SimpleInstanceTest, self).tearDown()
        CONF.network_label_regex = self.orig_conf
        CONF.ip_start = None
def __init__(self, test, policer_index, is_ip6=False):
        self._test = test
        self._policer_index = policer_index
        self._is_ip6 = is_ip6