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[IWAMOTO Toshihiro <iwamoto@xxxxxxxxxxxxx>]

Public bug reported:

Test failures with the DHCPv6 error from multiple test methods.

Use query:
http://logstash.openstack.org/#dashboard/file/logstash.json?query=message%3A%5C%22already%20allocated%20in%20subnet%5C%22

An example:

 ==============================
2017-01-11 05:00:04.479808 | Failed 1 tests - output below:
2017-01-11 05:00:04.479858 | ==============================
2017-01-11 05:00:04.479883 | 
2017-01-11 05:00:04.479962 | tempest.api.network.test_dhcp_ipv6.NetworksTestDHCPv6.test_dhcpv6_stateless_eui64[id-e5517e62-6f16-430d-a672-f80875493d4c]
2017-01-11 05:00:04.480056 | --------------------------------------------------------------------------------------------------------------------------
2017-01-11 05:00:04.480082 | 
2017-01-11 05:00:04.480113 | Captured traceback:
2017-01-11 05:00:04.480154 | ~~~~~~~~~~~~~~~~~~~
2017-01-11 05:00:04.480204 |     Traceback (most recent call last):
2017-01-11 05:00:04.480283 |       File "tempest/api/network/test_dhcp_ipv6.py", line 109, in test_dhcpv6_stateless_eui64
2017-01-11 05:00:04.480415 |         real_ip, eui_ip = self._get_ips_from_subnet(**kwargs)
2017-01-11 05:00:04.480486 |       File "tempest/api/network/test_dhcp_ipv6.py", line 90, in _get_ips_from_subnet
2017-01-11 05:00:04.480551 |         subnet = self.create_subnet(self.network, **kwargs)
2017-01-11 05:00:04.480607 |       File "tempest/api/network/base.py", line 179, in create_subnet
2017-01-11 05:00:04.481118 |         **kwargs)
2017-01-11 05:00:04.481198 |       File "tempest/lib/services/network/subnets_client.py", line 27, in create_subnet
2017-01-11 05:00:04.481260 |         return self.create_resource(uri, post_data)
2017-01-11 05:00:04.481756 |       File "tempest/lib/services/network/base.py", line 60, in create_resource
2017-01-11 05:00:04.481830 |         resp, body = self.post(req_uri, req_post_data)
2017-01-11 05:00:04.481887 |       File "tempest/lib/common/rest_client.py", line 276, in post
2017-01-11 05:00:04.481946 |         return self.request('POST', url, extra_headers, headers, body, chunked)
2017-01-11 05:00:04.482000 |       File "tempest/lib/common/rest_client.py", line 664, in request
2017-01-11 05:00:04.482042 |         self._error_checker(resp, resp_body)
2017-01-11 05:00:04.482098 |       File "tempest/lib/common/rest_client.py", line 776, in _error_checker
2017-01-11 05:00:04.482145 |         raise exceptions.Conflict(resp_body, resp=resp)
2017-01-11 05:00:04.482204 |     tempest.lib.exceptions.Conflict: An object with that identifier already exists
2017-01-11 05:00:04.482325 |     Details: {u'detail': u'', u'message': u'IP address 2003::f816:3eff:fe18:34ee already allocated in subnet 181627ba-b8ff-49c2-b97d-21763a0b572c', u'type': u'IpAddressAlreadyAllocated'}

** Affects: neutron
     Importance: Undecided
         Status: New


** Tags: gate-failure ipv6

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https://bugs.launchpad.net/bugs/1655567

Title:
  DHCPv6 failures with "address already allocated in subnet" error

Status in neutron:
  New

Bug description:
  Test failures with the DHCPv6 error from multiple test methods.

  Use query:
  http://logstash.openstack.org/#dashboard/file/logstash.json?query=message%3A%5C%22already%20allocated%20in%20subnet%5C%22

  An example:

   ==============================
  2017-01-11 05:00:04.479808 | Failed 1 tests - output below:
  2017-01-11 05:00:04.479858 | ==============================
  2017-01-11 05:00:04.479883 | 
  2017-01-11 05:00:04.479962 | tempest.api.network.test_dhcp_ipv6.NetworksTestDHCPv6.test_dhcpv6_stateless_eui64[id-e5517e62-6f16-430d-a672-f80875493d4c]
  2017-01-11 05:00:04.480056 | --------------------------------------------------------------------------------------------------------------------------
  2017-01-11 05:00:04.480082 | 
  2017-01-11 05:00:04.480113 | Captured traceback:
  2017-01-11 05:00:04.480154 | ~~~~~~~~~~~~~~~~~~~
  2017-01-11 05:00:04.480204 |     Traceback (most recent call last):
  2017-01-11 05:00:04.480283 |       File "tempest/api/network/test_dhcp_ipv6.py", line 109, in test_dhcpv6_stateless_eui64
  2017-01-11 05:00:04.480415 |         real_ip, eui_ip = self._get_ips_from_subnet(**kwargs)
  2017-01-11 05:00:04.480486 |       File "tempest/api/network/test_dhcp_ipv6.py", line 90, in _get_ips_from_subnet
  2017-01-11 05:00:04.480551 |         subnet = self.create_subnet(self.network, **kwargs)
  2017-01-11 05:00:04.480607 |       File "tempest/api/network/base.py", line 179, in create_subnet
  2017-01-11 05:00:04.481118 |         **kwargs)
  2017-01-11 05:00:04.481198 |       File "tempest/lib/services/network/subnets_client.py", line 27, in create_subnet
  2017-01-11 05:00:04.481260 |         return self.create_resource(uri, post_data)
  2017-01-11 05:00:04.481756 |       File "tempest/lib/services/network/base.py", line 60, in create_resource
  2017-01-11 05:00:04.481830 |         resp, body = self.post(req_uri, req_post_data)
  2017-01-11 05:00:04.481887 |       File "tempest/lib/common/rest_client.py", line 276, in post
  2017-01-11 05:00:04.481946 |         return self.request('POST', url, extra_headers, headers, body, chunked)
  2017-01-11 05:00:04.482000 |       File "tempest/lib/common/rest_client.py", line 664, in request
  2017-01-11 05:00:04.482042 |         self._error_checker(resp, resp_body)
  2017-01-11 05:00:04.482098 |       File "tempest/lib/common/rest_client.py", line 776, in _error_checker
  2017-01-11 05:00:04.482145 |         raise exceptions.Conflict(resp_body, resp=resp)
  2017-01-11 05:00:04.482204 |     tempest.lib.exceptions.Conflict: An object with that identifier already exists
  2017-01-11 05:00:04.482325 |     Details: {u'detail': u'', u'message': u'IP address 2003::f816:3eff:fe18:34ee already allocated in subnet 181627ba-b8ff-49c2-b97d-21763a0b572c', u'type': u'IpAddressAlreadyAllocated'}

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