With latest OSP 14, this unit test fails:

neutron.tests.unit.extensions.test_expose_port_forwarding_in_fip.TestExtendFipPortForwardingExtension.test_create_port_forwarding_and_remove_subnets
----------------------------------------------------------------------------------------------------------------------------------------------------

Captured traceback:
~~~~~~~~~~~~~~~~~~~
    Traceback (most recent call last):
      File "neutron/tests/base.py", line 179, in func
        return f(self, *args, **kwargs)
      File "neutron/tests/unit/extensions/test_expose_port_forwarding_in_fip.py", line 197, in test_create_port_forwarding_and_remove_subnets
        insub3['subnet']['id'], None)
      File "neutron/tests/unit/extensions/test_l3.py", line 420, in _router_interface_action
        self.assertEqual(expected_code, res.status_int, msg)
      File "/usr/lib/python2.7/site-packages/testtools/testcase.py", line 350, in assertEqual
        self.assertThat(observed, matcher, message)
      File "/usr/lib/python2.7/site-packages/testtools/testcase.py", line 435, in assertThat
        raise mismatch_error
    testtools.matchers._impl.MismatchError: 200 != 409

I think I spotted it once on earlier CI runs but it fails most of the time now