Based on current implement, if there is any reason caused the chain of metering label is missing, the whole function of iptables_driver.get_traffic_counters() will be broken, see https://github.com/openstack/neutron/blob/master/neutron/services/metering/drivers/iptables/iptables_driver.py#L275
Based on current implement, if there is any reason caused the chain of metering label is missing, the whole function of iptables_ driver. get_traffic_ counters( ) will be broken, see https:/ /github. com/openstack/ neutron/ blob/master/ neutron/ services/ metering/ drivers/ iptables/ iptables_ driver. py#L275