Comment 1 for bug 1968898

Something similar is happening in this run:
https://solutions.qa.canonical.com/testruns/testRun/04c8ea16-f704-4933-a9d2-1ac81cdf1d55

The tempest results are:
https://oil-jenkins.canonical.com/artifacts/04c8ea16-f704-4933-a9d2-1ac81cdf1d55/generated/generated/openstack/tempest_result.html

In the logs we see:
--------------------------------------------
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/nova/virt/libvirt/driver.py", line 7499, in _create_guest_with_network
    guest = self._create_guest(
  File "/usr/lib/python3.8/contextlib.py", line 120, in __exit__
    next(self.gen)
  File "/usr/lib/python3/dist-packages/nova/compute/manager.py", line 557, in wait_for_instance_event
    self._wait_for_instance_events(
  File "/usr/lib/python3/dist-packages/nova/compute/manager.py", line 469, in _wait_for_instance_events
    actual_event = event.wait()
  File "/usr/lib/python3/dist-packages/nova/compute/manager.py", line 434, in wait
    instance_event = self.event.wait()
  File "/usr/lib/python3/dist-packages/eventlet/event.py", line 125, in wait
    result = hub.switch()
  File "/usr/lib/python3/dist-packages/eventlet/hubs/hub.py", line 313, in switch
    return self.greenlet.switch()
eventlet.timeout.Timeout: 300 seconds

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/nova/compute/manager.py", line 2489, in _build_and_run_instance
    self.driver.spawn(context, instance, image_meta,
  File "/usr/lib/python3/dist-packages/nova/virt/libvirt/driver.py", line 4333, in spawn
    self._create_guest_with_network(
  File "/usr/lib/python3/dist-packages/nova/virt/libvirt/driver.py", line 7517, in _create_guest_with_network
    raise exception.VirtualInterfaceCreateException()
nova.exception.VirtualInterfaceCreateException: Virtual Interface creation failed

2022-04-12 19:38:02.588 1678077 ERROR nova.compute.manager [req-38acfeb8-a8cf-4fa2-a863-321341f602e8 1dea977949dd4a1585a46f6b83e2ddea - - 1ccf2567ce064e49bc11b1ec9aa6dd7d 1ccf2567ce064e49bc11b1ec9aa6dd7d] [instance: 35b7bc20-05d0-45a4-9a3f-9f2bec913fbf] Build of instance 35b7bc20-05d0-45a4-9a3f-9f2bec913fbf aborted: Failed to allocate the network(s), not rescheduling.: nova.exception.BuildAbortException: Build of instance 35b7bc20-05d0-45a4-9a3f-9f2bec913fbf aborted: Failed to allocate the network(s), not rescheduling.
2022-04-12 19:38:06.648 1678077 INFO nova.compute.manager [req-38acfeb8-a8cf-4fa2-a863-321341f602e8 1dea977949dd4a1585a46f6b83e2ddea - - 1ccf2567ce064e49bc11b1ec9aa6dd7d 1ccf2567ce064e49bc11b1ec9aa6dd7d] [instance: 35b7bc20-05d0-45a4-9a3f-9f2bec913fbf] Took 4.06 seconds to deallocate network for instance.
2022-04-12 19:38:06.861 1678077 INFO nova.scheduler.client.report [req-38acfeb8-a8cf-4fa2-a863-321341f602e8 1dea977949dd4a1585a46f6b83e2ddea - - 1ccf2567ce064e49bc11b1ec9aa6dd7d 1ccf2567ce064e49bc11b1ec9aa6dd7d] Deleted allocations for instance 35b7bc20-05d0-45a4-9a3f-9f2bec913fbf
2022-04-12 19:38:17.125 1678077 INFO nova.compute.manager [-] [instance: 35b7bc20-05d0-45a4-9a3f-9f2bec913fbf] VM Stopped (Lifecycle Event)
--------------------------------------------

Not the same error, but possibly related.

Link to crashdumps:
https://oil-jenkins.canonical.com/artifacts/04c8ea16-f704-4933-a9d2-1ac81cdf1d55/index.html