def _remove_chains(self):
        if not self._defer_apply:
            self._remove_chains_apply(self.filtered_ports,
                                      self.unfiltered_ports)
Remove ingress and egress chain for a port.
dataset/ETHPy150Open openstack/neutron/neutron/agent/linux/iptables_firewall.py/IptablesFirewallDriver._remove_chains