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Jan 22 11:24:31 iotworld-k9 neutron-openvswitch-agent[32356]: 2020-01-22 11:24:31.077 32356 ERROR ovsdbapp.backend.ovs_idl.command [req-bfcffce0-2940-4bb9-8633-00cd9c28c03f - - - - -] Error executing command: ovsdbapp.backend.ovs_idl.idlutils.RowNotFound: Cannot find Interface with name=patch-tun
                                                              2020-01-22 11:24:31.077 32356 ERROR ovsdbapp.backend.ovs_idl.command Traceback (most recent call last):
                                                              2020-01-22 11:24:31.077 32356 ERROR ovsdbapp.backend.ovs_idl.command   File "/openstack/venvs/neutron-20.0.1.dev2/lib/python3.6/site-packages/ovsdbapp/backend/ovs_idl/command.py", line 37, in execute
                                                              2020-01-22 11:24:31.077 32356 ERROR ovsdbapp.backend.ovs_idl.command     self.run_idl(None)
                                                              2020-01-22 11:24:31.077 32356 ERROR ovsdbapp.backend.ovs_idl.command   File "/openstack/venvs/neutron-20.0.1.dev2/lib/python3.6/site-packages/ovsdbapp/backend/ovs_idl/command.py", line 196, in run_idl
                                                              2020-01-22 11:24:31.077 32356 ERROR ovsdbapp.backend.ovs_idl.command     record = self.api.lookup(self.table, self.record)
                                                              2020-01-22 11:24:31.077 32356 ERROR ovsdbapp.backend.ovs_idl.command   File "/openstack/venvs/neutron-20.0.1.dev2/lib/python3.6/site-packages/ovsdbapp/backend/ovs_idl/__init__.py", line 107, in lookup
                                                              2020-01-22 11:24:31.077 32356 ERROR ovsdbapp.backend.ovs_idl.command     return self._lookup(table, record)
                                                              2020-01-22 11:24:31.077 32356 ERROR ovsdbapp.backend.ovs_idl.command   File "/openstack/venvs/neutron-20.0.1.dev2/lib/python3.6/site-packages/ovsdbapp/backend/ovs_idl/__init__.py", line 147, in _lookup
                                                              2020-01-22 11:24:31.077 32356 ERROR ovsdbapp.backend.ovs_idl.command     row = idlutils.row_by_value(self, rl.table, rl.column, record)
                                                              2020-01-22 11:24:31.077 32356 ERROR ovsdbapp.backend.ovs_idl.command   File "/openstack/venvs/neutron-20.0.1.dev2/lib/python3.6/site-packages/ovsdbapp/backend/ovs_idl/idlutils.py", line 65, in row_by_value
                                                              2020-01-22 11:24:31.077 32356 ERROR ovsdbapp.backend.ovs_idl.command     raise RowNotFound(table=table, col=column, match=match)
                                                              2020-01-22 11:24:31.077 32356 ERROR ovsdbapp.backend.ovs_idl.command ovsdbapp.backend.ovs_idl.idlutils.RowNotFound: Cannot find Interface with name=patch-tun
                                                              2020-01-22 11:24:31.077 32356 ERROR ovsdbapp.backend.ovs_idl.command