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[OpenStack Infra <2000150@xxxxxxxxxxxxxxxxxx>]

Reviewed:  https://review.opendev.org/c/openstack/neutron/+/868364
Committed: https://opendev.org/openstack/neutron/commit/370d8bcea3ae728c1aacba7b36800ecd759f3f8e
Submitter: "Zuul (22348)"
Branch:    master

commit 370d8bcea3ae728c1aacba7b36800ecd759f3f8e
Author: Slawek Kaplonski <skaplons@xxxxxxxxxx>
Date:   Wed Dec 21 16:59:53 2022 +0100

    [Fullstack] Wait 10 seconds to ensure that MAC address is configured
    
    In Linuxbridge and OVS PortFixture, when port is created, in the fake
    vm's namespace it needs to have correct mac address configured.
    It seems that for some reason it's not properly configured sometimes and
    that may cause failure of e.g. DHCP tests.
    So this patch adds retries for 10 seconds to ensure that MAC address is
    configured to the one which should be.
    
    Closes-bug: #2000150
    Change-Id: I8c6d226e626812c3ccf0a2681be68a5b080b3463


** Changed in: neutron
       Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/2000150

Title:
  Fullstack dhcp test test_multiple_agents_for_network is failing
  intermittently

Status in neutron:
  Fix Released

Bug description:
  Test
  neutron.tests.fullstack.test_dhcp_agent.TestDhcpAgentHA.test_multiple_agents_for_network
  is failing pretty often recently.

  Stacktrace:

  ft1.3: neutron.tests.fullstack.test_dhcp_agent.TestDhcpAgentHA.test_multiple_agents_for_network(Linux bridge agent)testtools.testresult.real._StringException: Traceback (most recent call last):
    File "/home/zuul/src/opendev.org/openstack/neutron/neutron/common/utils.py", line 724, in wait_until_true
      eventlet.sleep(sleep)
    File "/home/zuul/src/opendev.org/openstack/neutron/.tox/dsvm-fullstack-gate/lib/python3.10/site-packages/eventlet/greenthread.py", line 36, in sleep
      hub.switch()
    File "/home/zuul/src/opendev.org/openstack/neutron/.tox/dsvm-fullstack-gate/lib/python3.10/site-packages/eventlet/hubs/hub.py", line 313, in switch
      return self.greenlet.switch()
  eventlet.timeout.Timeout: 60 seconds

  During handling of the above exception, another exception occurred:

  Traceback (most recent call last):
    File "/home/zuul/src/opendev.org/openstack/neutron/neutron/tests/base.py", line 182, in func
      return f(self, *args, **kwargs)
    File "/home/zuul/src/opendev.org/openstack/neutron/neutron/tests/fullstack/test_dhcp_agent.py", line 201, in test_multiple_agents_for_network
      self._spawn_vm()
    File "/home/zuul/src/opendev.org/openstack/neutron/neutron/tests/fullstack/test_dhcp_agent.py", line 75, in _spawn_vm
      vm.block_until_dhcp_config_done()
    File "/home/zuul/src/opendev.org/openstack/neutron/neutron/tests/fullstack/resources/machine.py", line 217, in block_until_dhcp_config_done
      utils.wait_until_true(
    File "/home/zuul/src/opendev.org/openstack/neutron/neutron/common/utils.py", line 728, in wait_until_true
      raise exception
  neutron.tests.common.machine_fixtures.FakeMachineException: Address 10.0.0.229/24 or gateway 10.0.0.1 not configured properly on port test-veth1b4334

  Failure examples:

  https://36ccf3feef294bb781ed-88f13fe1d2cd9b64afb4d1818492b226.ssl.cf1.rackcdn.com/866225/4/gate/neutron-
  fullstack-with-uwsgi/d5c1b53/testr_results.html

  https://51698b00592e877a0023-3a9e3dcf5065ad1abf1d1a27741d8ba4.ssl.cf1.rackcdn.com/865822/2/check/neutron-
  fullstack-with-uwsgi/e813f7e/testr_results.html

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