finish_migration fails with nova.exception.InternalError: Unexpected vif_type=binding_failed

Just saw this on a gate failure, at the end of a resize the port binding fails because the vif type "binding_failed" is not found in the vif conversion step:

Sep 23 06:13:22.444045 ubuntu-focal-rax-dfw-0026631000 nova-compute[67008]: ERROR nova.compute.manager [None req-a02b86b5-b31e-4445-9fa3-07d16e10e223 tempest-AttachVolumeMultiAttachTest-2037743988 tempest-AttachVolumeMultiAttachTest-2037743988-project] [instance: c253b31e-afba-4695-ad01-9ec1e55bb987] Setting instance vm_state to ERROR: nova.exception.InternalError: Unexpected vif_type=binding_failed
Sep 23 06:13:22.444045 ubuntu-focal-rax-dfw-0026631000 nova-compute[67008]: ERROR nova.compute.manager [instance: c253b31e-afba-4695-ad01-9ec1e55bb987] Traceback (most recent call last):
Sep 23 06:13:22.444045 ubuntu-focal-rax-dfw-0026631000 nova-compute[67008]: ERROR nova.compute.manager [instance: c253b31e-afba-4695-ad01-9ec1e55bb987] File "/opt/stack/nova/nova/compute/manager.py", line 10228, in _error_out_instance_on_exception
Sep 23 06:13:22.444045 ubuntu-focal-rax-dfw-0026631000 nova-compute[67008]: ERROR nova.compute.manager [instance: c253b31e-afba-4695-ad01-9ec1e55bb987] yield
Sep 23 06:13:22.444045 ubuntu-focal-rax-dfw-0026631000 nova-compute[67008]: ERROR nova.compute.manager [instance: c253b31e-afba-4695-ad01-9ec1e55bb987] File "/opt/stack/nova/nova/compute/manager.py", line 5886, in _finish_resize_helper
Sep 23 06:13:22.444045 ubuntu-focal-rax-dfw-0026631000 nova-compute[67008]: ERROR nova.compute.manager [instance: c253b31e-afba-4695-ad01-9ec1e55bb987] network_info = self._finish_resize(context, instance, migration,
Sep 23 06:13:22.444045 ubuntu-focal-rax-dfw-0026631000 nova-compute[67008]: ERROR nova.compute.manager [instance: c253b31e-afba-4695-ad01-9ec1e55bb987] File "/opt/stack/nova/nova/compute/manager.py", line 5824, in _finish_resize
Sep 23 06:13:22.444045 ubuntu-focal-rax-dfw-0026631000 nova-compute[67008]: ERROR nova.compute.manager [instance: c253b31e-afba-4695-ad01-9ec1e55bb987] self._set_instance_info(instance, old_flavor)
Sep 23 06:13:22.444045 ubuntu-focal-rax-dfw-0026631000 nova-compute[67008]: ERROR nova.compute.manager [instance: c253b31e-afba-4695-ad01-9ec1e55bb987] File "/usr/local/lib/python3.8/dist-packages/oslo_utils/excutils.py", line 227, in __exit__
Sep 23 06:13:22.444045 ubuntu-focal-rax-dfw-0026631000 nova-compute[67008]: ERROR nova.compute.manager [instance: c253b31e-afba-4695-ad01-9ec1e55bb987] self.force_reraise()
Sep 23 06:13:22.444045 ubuntu-focal-rax-dfw-0026631000 nova-compute[67008]: ERROR nova.compute.manager [instance: c253b31e-afba-4695-ad01-9ec1e55bb987] File "/usr/local/lib/python3.8/dist-packages/oslo_utils/excutils.py", line 200, in force_reraise
Sep 23 06:13:22.444045 ubuntu-focal-rax-dfw-0026631000 nova-compute[67008]: ERROR nova.compute.manager [instance: c253b31e-afba-4695-ad01-9ec1e55bb987] raise self.value
Sep 23 06:13:22.444045 ubuntu-focal-rax-dfw-0026631000 nova-compute[67008]: ERROR nova.compute.manager [instance: c253b31e-afba-4695-ad01-9ec1e55bb987] File "/opt/stack/nova/nova/compute/manager.py", line 5807, in _finish_resize
Sep 23 06:13:22.444045 ubuntu-focal-rax-dfw-0026631000 nova-compute[67008]: ERROR nova.compute.manager [instance: c253b31e-afba-4695-ad01-9ec1e55bb987] self.driver.finish_migration(context, migration, instance,
Sep 23 06:13:22.444045 ubuntu-focal-rax-dfw-0026631000 nova-compute[67008]: ERROR nova.compute.manager [instance: c253b31e-afba-4695-ad01-9ec1e55bb987] File "/opt/stack/nova/nova/virt/libvirt/driver.py", line 11093, in finish_migration
Sep 23 06:13:22.444045 ubuntu-focal-rax-dfw-0026631000 nova-compute[67008]: ERROR nova.compute.manager [instance: c253b31e-afba-4695-ad01-9ec1e55bb987] xml = self._get_guest_xml(context, instance, network_info,
Sep 23 06:13:22.444045 ubuntu-focal-rax-dfw-0026631000 nova-compute[67008]: ERROR nova.compute.manager [instance: c253b31e-afba-4695-ad01-9ec1e55bb987] File "/opt/stack/nova/nova/virt/libvirt/driver.py", line 7038, in _get_guest_xml
Sep 23 06:13:22.444045 ubuntu-focal-rax-dfw-0026631000 nova-compute[67008]: ERROR nova.compute.manager [instance: c253b31e-afba-4695-ad01-9ec1e55bb987] conf = self._get_guest_config(instance, network_info, image_meta,
Sep 23 06:13:22.444045 ubuntu-focal-rax-dfw-0026631000 nova-compute[67008]: ERROR nova.compute.manager [instance: c253b31e-afba-4695-ad01-9ec1e55bb987] File "/opt/stack/nova/nova/virt/libvirt/driver.py", line 6667, in _get_guest_config
Sep 23 06:13:22.444045 ubuntu-focal-rax-dfw-0026631000 nova-compute[67008]: ERROR nova.compute.manager [instance: c253b31e-afba-4695-ad01-9ec1e55bb987] config = self.vif_driver.get_config(
Sep 23 06:13:22.444045 ubuntu-focal-rax-dfw-0026631000 nova-compute[67008]: ERROR nova.compute.manager [instance: c253b31e-afba-4695-ad01-9ec1e55bb987] File "/opt/stack/nova/nova/virt/libvirt/vif.py", line 609, in get_config
Sep 23 06:13:22.444045 ubuntu-focal-rax-dfw-0026631000 nova-compute[67008]: ERROR nova.compute.manager [instance: c253b31e-afba-4695-ad01-9ec1e55bb987] raise exception.InternalError(_('Unexpected vif_type=%s') % vif_type)
Sep 23 06:13:22.444045 ubuntu-focal-rax-dfw-0026631000 nova-compute[67008]: ERROR nova.compute.manager [instance: c253b31e-afba-4695-ad01-9ec1e55bb987] nova.exception.InternalError: Unexpected vif_type=binding_failed
Sep 23 06:13:22.444045 ubuntu-focal-rax-dfw-0026631000 nova-compute[67008]: ERROR nova.compute.manager [instance: c253b31e-afba-4695-ad01-9ec1e55bb987]

Logstash query:

http://logstash.openstack.org/#dashboard/file/logstash.json?query=message%3A%5C%22Setting%20instance%20vm_state%20to%20ERROR%3A%20nova.exception.InternalError%3A%20Unexpected%20vif_type%3Dbinding_failed%5C%22%20AND%20tags%3A%5C%22screen-n-cpu.txt%5C%22&from=7d