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[Akihiro Motoki <1780376@xxxxxxxxxxxxxxxxxx>]

There is nothing to do in neutron side. If neutron-lbaas tox job pulls
neutron and neutron-lib properly with upper-constraints.txt from the
stable/queens branch, the issue has gone.

I created a fresh neutron-lbaas tox py27 env (using stable/queens commit
ed663f36b0a14202fdff8132c0dd3d353cef6aff) and confirmed the expected
version of neutron and neutron-lib are installed. neutron is installed
from the latest stable/queens branch and neutron-lib 1.13.0 is the
latest queens version.

$ .tox/py27/bin/pip freeze | grep neutron
-e git+https://git.openstack.org/openstack/neutron@bffdbfe20e47d6f27cea8d26121e2c1eccba7e9f#egg=neutron
-e git+https://git.openstack.org//openstack/neutron-lbaas@ed663f36b0a14202fdff8132c0dd3d353cef6aff#egg=neutron_lbaas
neutron-lib==1.13.0
python-neutronclient==6.7.0


** Changed in: neutron
       Status: Confirmed => Invalid

** Changed in: neutron
   Importance: Medium => Undecided

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https://bugs.launchpad.net/bugs/1780376

Title:
  Queens neutron broken with recent L3 removal from neutron-
  lib.constants

Status in neutron:
  Invalid
Status in OpenStack Global Requirements:
  Fix Released

Bug description:
  This patch: https://github.com/openstack/neutron-
  lib/commit/ec829f9384547864aebb56390da8e17df7051aac breaks neutron in
  the current global requirements setup. Current GR with the new
  versioning pulls queens neutron and the 1.17.0 neutron-lib. Since L3
  was removed from neutron-lib.constants,  queens neutron fails on the
  reference neutron/plugins/common/constants.py

  I'm not sure if L3 should be put back, queens neutron patched, or the
  global requirements setup where it's pulling different versions of
  neutron and neutron-lib needs to be fixed.

  Steps to reproduce:
  Checkout neutron-lbaas and run tox -e py27
  Zuul seems to be pulling the right versions, local does not due to the GR constraints.

  Failed to import test module: neutron_lbaas.tests.unit.agent.test_agent
  Traceback (most recent call last):
    File "/home/michjohn/projects/migration/neutron-lbaas/.tox/py27/local/lib/python2.7/site-packages/unittest2/loader.py", line 456, in _find_test_path
      module = self._get_module_from_name(name)
    File "/home/michjohn/projects/migration/neutron-lbaas/.tox/py27/local/lib/python2.7/site-packages/unittest2/loader.py", line 395, in _get_module_from_name
      __import__(name)
    File "neutron_lbaas/tests/unit/agent/test_agent.py", line 19, in <module>
      from neutron_lbaas.agent import agent
    File "neutron_lbaas/agent/agent.py", line 26, in <module>
      from neutron_lbaas.agent import agent_manager as manager
    File "neutron_lbaas/agent/agent_manager.py", line 17, in <module>
      from neutron.agent import rpc as agent_rpc
    File "/home/michjohn/projects/migration/neutron-lbaas/.tox/py27/local/lib/python2.7/site-packages/neutron/agent/rpc.py", line 27, in <module>
      from neutron.agent import resource_cache
    File "/home/michjohn/projects/migration/neutron-lbaas/.tox/py27/local/lib/python2.7/site-packages/neutron/agent/resource_cache.py", line 20, in <module>
      from neutron.api.rpc.callbacks.consumer import registry as registry_rpc
    File "/home/michjohn/projects/migration/neutron-lbaas/.tox/py27/local/lib/python2.7/site-packages/neutron/api/rpc/callbacks/consumer/registry.py", line 15, in <module>
      from neutron.api.rpc.callbacks import resource_manager
    File "/home/michjohn/projects/migration/neutron-lbaas/.tox/py27/local/lib/python2.7/site-packages/neutron/api/rpc/callbacks/resource_manager.py", line 21, in <module>
      from neutron.api.rpc.callbacks import resources
    File "/home/michjohn/projects/migration/neutron-lbaas/.tox/py27/local/lib/python2.7/site-packages/neutron/api/rpc/callbacks/resources.py", line 15, in <module>
      from neutron.objects import network
    File "/home/michjohn/projects/migration/neutron-lbaas/.tox/py27/local/lib/python2.7/site-packages/neutron/objects/network.py", line 21, in <module>
      from neutron.db.models import segment as segment_model
    File "/home/michjohn/projects/migration/neutron-lbaas/.tox/py27/local/lib/python2.7/site-packages/neutron/db/models/segment.py", line 24, in <module>
      from neutron.extensions import segment
    File "/home/michjohn/projects/migration/neutron-lbaas/.tox/py27/local/lib/python2.7/site-packages/neutron/extensions/segment.py", line 26, in <module>
      from neutron.api import extensions
    File "/home/michjohn/projects/migration/neutron-lbaas/.tox/py27/local/lib/python2.7/site-packages/neutron/api/extensions.py", line 32, in <module>
      from neutron.plugins.common import constants as const
    File "/home/michjohn/projects/migration/neutron-lbaas/.tox/py27/local/lib/python2.7/site-packages/neutron/plugins/common/constants.py", line 28, in <module>
      'router': constants.L3,
  AttributeError: 'module' object has no attribute 'L3'

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