# Pastebin nxc0Uknt
/var/lib/openstack/lib/python3.8/site-packages/eventlet/greenthread.py:221 in main
    `result = function(*args, **kwargs)`

/var/lib/openstack/lib/python3.8/site-packages/os_ken/lib/hub.py:68 in _launch
    `return func(*args, **kwargs)`

/var/lib/openstack/lib/python3.8/site-packages/neutron/plugins/ml2/drivers/openvswitch/agent/openflow/native/ovs_oskenapp.py:40 in agent_main_wrapper
    `ovs_agent.main(bridge_classes)`

/var/lib/openstack/lib/python3.8/site-packages/neutron/plugins/ml2/drivers/openvswitch/agent/ovs_neutron_agent.py:2873 in main
    `agent.daemon_loop()`

/var/lib/openstack/lib/python3.8/site-packages/neutron/plugins/ml2/drivers/openvswitch/agent/ovs_neutron_agent.py:2762 in daemon_loop
    `self.rpc_loop(polling_manager=pm)`

/var/lib/openstack/lib/python3.8/site-packages/neutron/plugins/ml2/drivers/openvswitch/agent/ovs_neutron_agent.py:2704 in rpc_loop
    `failed_devices = self.process_network_ports(`

/var/lib/openstack/lib/python3.8/site-packages/neutron/plugins/ml2/drivers/openvswitch/agent/ovs_neutron_agent.py:2135 in process_network_ports
    `self.sg_agent.setup_port_filters(added_to_datapath,`

/var/lib/openstack/lib/python3.8/site-packages/neutron/agent/securitygroups_rpc.py:300 in setup_port_filters
    `self.refresh_firewall(updated_devices)`

/var/lib/openstack/lib/python3.8/site-packages/neutron/agent/securitygroups_rpc.py:151 in decorated_function
    `return func(self,  # pylint: disable=not-callable`

/var/lib/openstack/lib/python3.8/site-packages/neutron/agent/securitygroups_rpc.py:262 in refresh_firewall
    `self._apply_port_filter(device_ids, update_filter=True)`

/var/lib/openstack/lib/python3.8/site-packages/neutron/agent/securitygroups_rpc.py:94 in decorated_function
    `return func(self, *args, **kwargs)`

/var/lib/openstack/lib/python3.8/site-packages/neutron/agent/securitygroups_rpc.py:197 in _apply_port_filter
    `self.firewall.process_trusted_ports(trusted_devices)`

/usr/lib/python3.8/contextlib.py:120 in __exit__
    `next(self.gen)`

/var/lib/openstack/lib/python3.8/site-packages/neutron/agent/firewall.py:140 in defer_apply
    `self.filter_defer_apply_off()`

/var/lib/openstack/lib/python3.8/site-packages/neutron/agent/linux/openvswitch_firewall/firewall.py:846 in filter_defer_apply_off
    `self._cleanup_stale_sg()`

/var/lib/openstack/lib/python3.8/site-packages/neutron/agent/linux/openvswitch_firewall/firewall.py:822 in _cleanup_stale_sg
    `self.conj_ip_manager.sg_removed(sg_id)`

/var/lib/openstack/lib/python3.8/site-packages/neutron/agent/linux/openvswitch_firewall/firewall.py:501 in sg_removed
    `self.update_flows_for_vlan(vlan_tag,`

/var/lib/openstack/lib/python3.8/site-packages/neutron/agent/linux/openvswitch_firewall/firewall.py:442 in update_flows_for_vlan
    `self._update_flows_for_vlan_subr(`

/var/lib/openstack/lib/python3.8/site-packages/neutron/agent/linux/openvswitch_firewall/firewall.py:414 in _update_flows_for_vlan_subr
    `self.driver.delete_flows_for_flow_state(`

/var/lib/openstack/lib/python3.8/site-packages/neutron/agent/linux/openvswitch_firewall/firewall.py:1557 in delete_flows_for_flow_state
    `self.delete_flow_for_ip(removed_ip, direction, ethertype, vlan_tag,`

/var/lib/openstack/lib/python3.8/site-packages/neutron/agent/linux/openvswitch_firewall/firewall.py:1583 in delete_flow_for_ip
    `self._delete_flows(deferred=False, **flow)`

/var/lib/openstack/lib/python3.8/site-packages/neutron/agent/linux/openvswitch_firewall/firewall.py:592 in _delete_flows
    `self.int_br.br.delete_flows(**kwargs)`

/var/lib/openstack/lib/python3.8/site-packages/neutron/agent/common/ovs_lib.py:497 in delete_flows
    `self.do_action_flows('del', [kwargs])`

/var/lib/openstack/lib/python3.8/site-packages/neutron/agent/common/ovs_lib.py:487 in do_action_flows
    `self.run_ofctl('%s-flows' % action, extra_param + ['-'],`

/var/lib/openstack/lib/python3.8/site-packages/neutron/agent/common/ovs_lib.py:390 in run_ofctl
    `return utils.execute(full_args, run_as_root=True,`

/var/lib/openstack/lib/python3.8/site-packages/neutron/agent/linux/utils.py:123 in execute
    `execute_rootwrap_daemon(cmd, process_input, addl_env))`

/var/lib/openstack/lib/python3.8/site-packages/neutron/agent/linux/utils.py:107 in execute_rootwrap_daemon
    `return client.execute(cmd, process_input)`

/var/lib/openstack/lib/python3.8/site-packages/oslo_rootwrap/client.py:169 in execute
    `res = self._run_one_command(proxy, cmd, stdin)`

/var/lib/openstack/lib/python3.8/site-packages/oslo_rootwrap/client.py:154 in _run_one_command
    `res = proxy.run_one_command(cmd, stdin)`

<string>:2 in run_one_command
    ``

/usr/lib/python3.8/multiprocessing/managers.py:835 in _callmethod
    `kind, result = conn.recv()`

/var/lib/openstack/lib/python3.8/site-packages/oslo_rootwrap/jsonrpc.py:133 in recv
    `s = self.recv_bytes()`

/var/lib/openstack/lib/python3.8/site-packages/oslo_rootwrap/jsonrpc.py:122 in recv_bytes
    `item = struct.unpack('!Q', self.recvall(8))[0]`

/var/lib/openstack/lib/python3.8/site-packages/oslo_rootwrap/jsonrpc.py:149 in _recvall_slow
    `piece = self._socket.recv(remaining)`

/var/lib/openstack/lib/python3.8/site-packages/eventlet/greenio/base.py:365 in recv
    `return self._recv_loop(self.fd.recv, b'', bufsize, flags)`

/var/lib/openstack/lib/python3.8/site-packages/eventlet/greenio/base.py:359 in _recv_loop
    `self._read_trampoline()`

/var/lib/openstack/lib/python3.8/site-packages/eventlet/greenio/base.py:327 in _read_trampoline
    `self._trampoline(`

/var/lib/openstack/lib/python3.8/site-packages/eventlet/greenio/base.py:208 in _trampoline
    `return trampoline(fd, read=read, write=write, timeout=timeout,`

/var/lib/openstack/lib/python3.8/site-packages/eventlet/hubs/__init__.py:159 in trampoline
    `return hub.switch()`

/var/lib/openstack/lib/python3.8/site-packages/eventlet/hubs/hub.py:298 in switch
    `return self.greenlet.switch()`