Test 'test_container_ipam_request_address_with_existing_port' failed in CI

2020-02-22 20:24:53.665012 | primary | 2020-02-22 20:24:53.662 | {7} kuryr_libnetwork.tests.fullstack.test_ipam.IpamTest.test_container_ipam_request_address_with_existing_port [20.007964s] ... FAILED
2020-02-22 20:24:53.669046 | primary | 2020-02-22 20:24:53.668 |
2020-02-22 20:24:53.672267 | primary | 2020-02-22 20:24:53.671 | Captured traceback:
2020-02-22 20:24:53.675389 | primary | 2020-02-22 20:24:53.674 | ~~~~~~~~~~~~~~~~~~~
2020-02-22 20:24:53.681234 | primary | 2020-02-22 20:24:53.680 | Traceback (most recent call last):
2020-02-22 20:24:53.684297 | primary | 2020-02-22 20:24:53.683 | File "/opt/stack/new/kuryr-libnetwork/.tox/fullstack/lib/python3.6/site-packages/docker/api/client.py", line 261, in _raise_for_status
2020-02-22 20:24:53.687352 | primary | 2020-02-22 20:24:53.686 | response.raise_for_status()
2020-02-22 20:24:53.690578 | primary | 2020-02-22 20:24:53.689 | File "/opt/stack/new/kuryr-libnetwork/.tox/fullstack/lib/python3.6/site-packages/requests/models.py", line 941, in raise_for_status
2020-02-22 20:24:53.693754 | primary | 2020-02-22 20:24:53.692 | raise HTTPError(http_error_msg, response=self)
2020-02-22 20:24:53.697250 | primary | 2020-02-22 20:24:53.696 | requests.exceptions.HTTPError: 500 Server Error: Internal Server Error for url: http://0.0.0.0:2375/v1.35/networks/create
2020-02-22 20:24:53.700386 | primary | 2020-02-22 20:24:53.699 |
2020-02-22 20:24:53.704299 | primary | 2020-02-22 20:24:53.703 | During handling of the above exception, another exception occurred:
2020-02-22 20:24:53.709883 | primary | 2020-02-22 20:24:53.706 |
2020-02-22 20:24:53.714123 | primary | 2020-02-22 20:24:53.712 | Traceback (most recent call last):
2020-02-22 20:24:53.718310 | primary | 2020-02-22 20:24:53.717 | File "/opt/stack/new/kuryr-libnetwork/kuryr_libnetwork/tests/fullstack/test_ipam.py", line 415, in test_container_ipam_request_address_with_existing_port
2020-02-22 20:24:53.722947 | primary | 2020-02-22 20:24:53.721 | ipam=fake_ipam)
2020-02-22 20:24:53.726118 | primary | 2020-02-22 20:24:53.725 | File "/opt/stack/new/kuryr-libnetwork/.tox/fullstack/lib/python3.6/site-packages/docker/api/network.py", line 153, in create_network
2020-02-22 20:24:53.730331 | primary | 2020-02-22 20:24:53.729 | return self._result(res, json=True)
2020-02-22 20:24:53.736338 | primary | 2020-02-22 20:24:53.735 | File "/opt/stack/new/kuryr-libnetwork/.tox/fullstack/lib/python3.6/site-packages/docker/api/client.py", line 267, in _result
2020-02-22 20:24:53.740937 | primary | 2020-02-22 20:24:53.740 | self._raise_for_status(response)
2020-02-22 20:24:53.746130 | primary | 2020-02-22 20:24:53.745 | File "/opt/stack/new/kuryr-libnetwork/.tox/fullstack/lib/python3.6/site-packages/docker/api/client.py", line 263, in _raise_for_status
2020-02-22 20:24:53.750744 | primary | 2020-02-22 20:24:53.748 | raise create_api_error_from_http_exception(e)
2020-02-22 20:24:53.756519 | primary | 2020-02-22 20:24:53.753 | File "/opt/stack/new/kuryr-libnetwork/.tox/fullstack/lib/python3.6/site-packages/docker/errors.py", line 31, in create_api_error_from_http_exception
2020-02-22 20:24:53.760027 | primary | 2020-02-22 20:24:53.759 | raise cls(e, response=response, explanation=explanation)
2020-02-22 20:24:53.764314 | primary | 2020-02-22 20:24:53.763 | docker.errors.APIError: 500 Server Error: Internal Server Error ("failed to allocate gateway (fe81::1): IpamDriver.RequestAddress: Requested gateway fe81::1 does not match with gateway fe81:: in existed network.")