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[Ed Bak <ed.bak2@xxxxxx>]

Public bug reported:

WIth DVR enabled, performing a 'neutron router-gateway-clear' creates a
router namespace and a binding on every compute node.

root@Linux:~# neutron router-create router1
Created a new router:
+-----------------------+--------------------------------------+
| Field                 | Value                                |
+-----------------------+--------------------------------------+
| admin_state_up        | True                                 |
| distributed           | True                                 |
| external_gateway_info |                                      |
| id                    | f31b9373-2946-48d8-b6d2-50596162febd |
| name                  | router1                              |
| routes                |                                      |
| status                | ACTIVE                               |
| tenant_id             | 2b009be2540a458eaed8cf7d651fc68c     |
+-----------------------+--------------------------------------+
root@Linux:~# neutron l3-agent-list-hosting-router f31b9373-2946-48d8-b6d2-50596162febd

root@Linux:~# neutron router-gateway-clear f31b9373-2946-48d8-b6d2-50596162febd
Removed gateway from router f31b9373-2946-48d8-b6d2-50596162febd
root@Linux:~# neutron l3-agent-list-hosting-router f31b9373-2946-48d8-b6d2-50596162febd
+--------------------------------------+--------------------------------------+----------------+-------+
| id                                   | host                                 | admin_state_up | alive |
+--------------------------------------+--------------------------------------+----------------+-------+
| 07615fcd-a9b3-4081-91e8-f0189a19a7f0 | overcloud-novacompute3-4aec3ezflrbp  | True           | :-)   |
| 096fb891-a330-47d8-b215-6e6111763961 | overcloud-novacompute11-tb4nbhopurh3 | True           | :-)   |
| 11c6e8da-06f6-4546-a4bc-5604c51d4027 | overcloud-novacompute16-73uyrqna65cv | True           | :-)   |
| 2b1f019c-0996-4bb3-83ac-10f2282d7e04 | overcloud-novacompute17-bwxlkqfqmcq2 | True           | :-)   |
| 30f22724-267e-452b-b20f-37b517d9fb3b | overcloud-novacompute13-v7wnrei5vcfl | True           | :-)   |
| 40cf7636-b639-4597-8fea-2e55a3caf168 | overcloud-novacompute21-3hnnn2o675kv | True           | :-)   |
| 42437ccf-0462-4eb9-824c-4799f43b5af9 | overcloud-novacompute0-4livrqcyum64  | True           | :-)   |
| 573002a3-ef18-4f09-9d44-ebdb726e586a | overcloud-novacompute5-gxw6y4tcwta5  | True           | :-)   |
| 60e730e2-9ea3-444b-806a-177440fc37fd | overcloud-novacompute19-3caohck3xtpm | True           | :-)   |
| 6f8a3d30-e7a3-4110-b7a0-4631ca5e6389 | overcloud-novacompute12-uqpqd3soidmb | True           | :-)   |
| 796cf9ea-ff66-4615-9e24-5d65e11195a7 | overcloud-novacompute20-2xj2chsys4ux | True           | :-)   |
| 7a6a0342-b6e8-461f-b691-5913883dd5b1 | overcloud-novacompute6-5x7azyiif3h6  | True           | :-)   |
| 7d6ebb2a-8e33-436e-a7ea-0a23dcbc26ab | overcloud-novacompute10-cuv6kw35ijvq | True           | :-)   |
| 9444f292-2d9c-4b26-abf5-10c64c9713c5 | overcloud-novacompute15-si3luwq2wear | True           | :-)   |
| 98a5b703-504a-43fe-975c-430fb42ca61f | overcloud-novacompute18-5yo7fwdu3tgi | True           | :-)   |
| 998f7067-75d8-44b9-a651-8d1f1acca062 | overcloud-novacompute8-j5fo4tv2ssye  | True           | :-)   |
| 9ec538c4-60b6-4606-9571-d108764607d3 | overcloud-novacompute9-vcvfpdyybn34  | True           | :-)   |
| b9fc298b-8e16-4d57-adea-5fde05c80065 | overcloud-novacompute1-spsmzbnh5gwl  | True           | :-)   |
| c5a0aa20-714a-406f-bdcd-e464b4dfd5ef | overcloud-novacompute7-tuj4iztu6fkp  | True           | :-)   |
| c978b1df-b092-43a1-9e2e-ebfd5cd66036 | overcloud-novacompute14-qzrhkxdr76wa | True           | :-)   |
| d644d186-67ee-4ac3-a225-66eef8de2b6c | overcloud-novacompute22-3gh5njls4osi | True           | :-)   |
| f9381ac1-5605-448e-8916-9900b26218bb | overcloud-novacompute2-wyzyfitbpq3i  | True           | :-)   |
+--------------------------------------+--------------------------------------+----------------+-------+

** Affects: neutron
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1378066

Title:
  router-gateway-clear creates a namespace and binding on every compute
  node

Status in OpenStack Neutron (virtual network service):
  New

Bug description:
  WIth DVR enabled, performing a 'neutron router-gateway-clear' creates
  a router namespace and a binding on every compute node.

  root@Linux:~# neutron router-create router1
  Created a new router:
  +-----------------------+--------------------------------------+
  | Field                 | Value                                |
  +-----------------------+--------------------------------------+
  | admin_state_up        | True                                 |
  | distributed           | True                                 |
  | external_gateway_info |                                      |
  | id                    | f31b9373-2946-48d8-b6d2-50596162febd |
  | name                  | router1                              |
  | routes                |                                      |
  | status                | ACTIVE                               |
  | tenant_id             | 2b009be2540a458eaed8cf7d651fc68c     |
  +-----------------------+--------------------------------------+
  root@Linux:~# neutron l3-agent-list-hosting-router f31b9373-2946-48d8-b6d2-50596162febd

  root@Linux:~# neutron router-gateway-clear f31b9373-2946-48d8-b6d2-50596162febd
  Removed gateway from router f31b9373-2946-48d8-b6d2-50596162febd
  root@Linux:~# neutron l3-agent-list-hosting-router f31b9373-2946-48d8-b6d2-50596162febd
  +--------------------------------------+--------------------------------------+----------------+-------+
  | id                                   | host                                 | admin_state_up | alive |
  +--------------------------------------+--------------------------------------+----------------+-------+
  | 07615fcd-a9b3-4081-91e8-f0189a19a7f0 | overcloud-novacompute3-4aec3ezflrbp  | True           | :-)   |
  | 096fb891-a330-47d8-b215-6e6111763961 | overcloud-novacompute11-tb4nbhopurh3 | True           | :-)   |
  | 11c6e8da-06f6-4546-a4bc-5604c51d4027 | overcloud-novacompute16-73uyrqna65cv | True           | :-)   |
  | 2b1f019c-0996-4bb3-83ac-10f2282d7e04 | overcloud-novacompute17-bwxlkqfqmcq2 | True           | :-)   |
  | 30f22724-267e-452b-b20f-37b517d9fb3b | overcloud-novacompute13-v7wnrei5vcfl | True           | :-)   |
  | 40cf7636-b639-4597-8fea-2e55a3caf168 | overcloud-novacompute21-3hnnn2o675kv | True           | :-)   |
  | 42437ccf-0462-4eb9-824c-4799f43b5af9 | overcloud-novacompute0-4livrqcyum64  | True           | :-)   |
  | 573002a3-ef18-4f09-9d44-ebdb726e586a | overcloud-novacompute5-gxw6y4tcwta5  | True           | :-)   |
  | 60e730e2-9ea3-444b-806a-177440fc37fd | overcloud-novacompute19-3caohck3xtpm | True           | :-)   |
  | 6f8a3d30-e7a3-4110-b7a0-4631ca5e6389 | overcloud-novacompute12-uqpqd3soidmb | True           | :-)   |
  | 796cf9ea-ff66-4615-9e24-5d65e11195a7 | overcloud-novacompute20-2xj2chsys4ux | True           | :-)   |
  | 7a6a0342-b6e8-461f-b691-5913883dd5b1 | overcloud-novacompute6-5x7azyiif3h6  | True           | :-)   |
  | 7d6ebb2a-8e33-436e-a7ea-0a23dcbc26ab | overcloud-novacompute10-cuv6kw35ijvq | True           | :-)   |
  | 9444f292-2d9c-4b26-abf5-10c64c9713c5 | overcloud-novacompute15-si3luwq2wear | True           | :-)   |
  | 98a5b703-504a-43fe-975c-430fb42ca61f | overcloud-novacompute18-5yo7fwdu3tgi | True           | :-)   |
  | 998f7067-75d8-44b9-a651-8d1f1acca062 | overcloud-novacompute8-j5fo4tv2ssye  | True           | :-)   |
  | 9ec538c4-60b6-4606-9571-d108764607d3 | overcloud-novacompute9-vcvfpdyybn34  | True           | :-)   |
  | b9fc298b-8e16-4d57-adea-5fde05c80065 | overcloud-novacompute1-spsmzbnh5gwl  | True           | :-)   |
  | c5a0aa20-714a-406f-bdcd-e464b4dfd5ef | overcloud-novacompute7-tuj4iztu6fkp  | True           | :-)   |
  | c978b1df-b092-43a1-9e2e-ebfd5cd66036 | overcloud-novacompute14-qzrhkxdr76wa | True           | :-)   |
  | d644d186-67ee-4ac3-a225-66eef8de2b6c | overcloud-novacompute22-3gh5njls4osi | True           | :-)   |
  | f9381ac1-5605-448e-8916-9900b26218bb | overcloud-novacompute2-wyzyfitbpq3i  | True           | :-)   |
  +--------------------------------------+--------------------------------------+----------------+-------+

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