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[Slawek Kaplonski <1837012@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Scenario tests for neutron-dynamic-routing can't be run all in one job with single "tempest run" command.
It is like that because for each class of scenario tests: "base", "ipv4" an "ipv6" there is created bridge and docker network, see for example https://github.com/openstack/neutron-dynamic-routing/blob/master/neutron_dynamic_routing/tests/tempest/scenario/basic/base.py#L71 and for each class of those tests there is always same subnet used.
That cause problems with docker which returns errors like:

2019-07-17 21:03:40.947 7349 INFO os_ken.tests.integrated.common.docker_base [-] sudo docker network create --driver bridge  --gateway 192.168.10.1 --subnet 192.168.10.0/24 br-docker-basic
2019-07-17 21:03:40.952 7349 ERROR os_ken.tests.integrated.common.docker_base [-] stdout: 
2019-07-17 21:03:40.952 7349 ERROR os_ken.tests.integrated.common.docker_base [-] stderr: Error response from daemon: Pool overlaps with other one on this address space

** Affects: neutron
     Importance: Medium
         Status: Confirmed


** Tags: gate-failure

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https://bugs.launchpad.net/bugs/1837012

Title:
  Neutron-dynamic-routing tempest tests can't be run all in one job

Status in neutron:
  Confirmed

Bug description:
  Scenario tests for neutron-dynamic-routing can't be run all in one job with single "tempest run" command.
  It is like that because for each class of scenario tests: "base", "ipv4" an "ipv6" there is created bridge and docker network, see for example https://github.com/openstack/neutron-dynamic-routing/blob/master/neutron_dynamic_routing/tests/tempest/scenario/basic/base.py#L71 and for each class of those tests there is always same subnet used.
  That cause problems with docker which returns errors like:

  2019-07-17 21:03:40.947 7349 INFO os_ken.tests.integrated.common.docker_base [-] sudo docker network create --driver bridge  --gateway 192.168.10.1 --subnet 192.168.10.0/24 br-docker-basic
  2019-07-17 21:03:40.952 7349 ERROR os_ken.tests.integrated.common.docker_base [-] stdout: 
  2019-07-17 21:03:40.952 7349 ERROR os_ken.tests.integrated.common.docker_base [-] stderr: Error response from daemon: Pool overlaps with other one on this address space

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