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[Bug 1346108] [NEW] nova doesn't release network when network_info is not equal to 1

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Public bug reported:

nova 
[tagett@stack-01 devstack]$ nova net-list 
+--------------------------------------+---------+------+
| ID                                   | Label   | CIDR |
+--------------------------------------+---------+------+
| d838074c-632c-43cf-8aae-24e17a2d1828 | public  | -    |
| cc16209f-a7b4-44f6-8c8f-27ea7b0cc9ff | private | -    |
| b745b2c6-db16-40ab-8ad7-af6da0e5e699 | private | -    |
+--------------------------------------+---------+------+

[tagett@stack-01 devstack]$ nova  --os-compute-api-version 2 interface-attach vm1 
ERROR (ClientException): Failed to attach interface (HTTP 500) (Request-ID: req-a2da4531-0f22-46b2-94a9-ac9a7b0c350f)

see from log

2014-07-21 17:06:16.543 ERROR nova.compute.manager [req-
375c0956-70f8-4d3a-b659-f48666787198 admin admin]
allocate_port_for_instance returned 2 ports

check nova show output

[tagett@stack-01 devstack]$ nova  --os-compute-api-version 2 show vm1 
+--------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Property                             | Value                                                                                                                                                            |
+--------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| OS-DCF:diskConfig                    | AUTO                                                                                                                                                             |
| OS-EXT-AZ:availability_zone          | nova                                                                                                                                                             |
| OS-EXT-SRV-ATTR:host                 | stack-01                                                                                                                                                         |
| OS-EXT-SRV-ATTR:hypervisor_hostname  | stack-01                                                                                                                                                         |
| OS-EXT-SRV-ATTR:instance_name        | instance-00000004                                                                                                                                                |
| OS-EXT-STS:power_state               | 1                                                                                                                                                                |
| OS-EXT-STS:task_state                | -                                                                                                                                                                |
| OS-EXT-STS:vm_state                  | active                                                                                                                                                           |
| OS-SRV-USG:launched_at               | 2014-07-21T08:22:55.000000                                                                                                                                       |
| OS-SRV-USG:terminated_at             | -                                                                                                                                                                |
| accessIPv4                           |                                                                                                                                                                  |
| accessIPv6                           |                                                                                                                                                                  |
| config_drive                         |                                                                                                                                                                  |
| created                              | 2014-07-21T08:22:45Z                                                                                                                                             |
| flavor                               | m1.nano (42)                                                                                                                                                     |
| hostId                               | ce82402eef4265e64ca9544980007863759f58411f2afb81e1918d90                                                                                                         |
| id                                   | 628b759d-d8ad-4646-b2c3-979151efdf83                                                                                                                             |
| image                                | cirros-0.3.2-x86_64-uec (44c37b90-0ec3-460a-bdf2-bd8bb98c9fdf)                                                                                                   |
| key_name                             | 11                                                                                                                                                               |
| metadata                             | {}                                                                                                                                                               |
| name                                 | vm1                                                                                                                                                              |
| os-extended-volumes:volumes_attached | []                                                                                                                                                               |
| private network                      | 192.168.1.16, 192.168.1.17, 192.168.1.18, 192.168.1.19, 192.168.1.20, 192.168.1.21, 192.168.1.22, 192.168.1.23, 192.168.1.25                                     |
| progress                             | 0                                                                                                                                                                |
| public network                       | 172.24.4.14, 172.24.4.15, 172.24.4.16, 172.24.4.17, 172.24.4.18, 172.24.4.19, 172.24.4.21                                                                        |
| security_groups                      | default, default, default, default, default, default, default, default, default, default, default, default, default, default, default, default, default, default |
| status                               | ACTIVE                                                                                                                                                           |
| tenant_id                            | d7beb7f28e0b4f41901215000339361d                                                                                                                                 |
| updated                              | 2014-07-21T08:22:55Z                                                                                                                                             |
| user_id                              | fba8a67b69004320b2ace0b35aeebb18                                                                                                                                 |


in guest side ,no new nic was added.
we need to release network when allocate_port _for instace() return multiple networks.

** Affects: nova
     Importance: Undecided
     Assignee: Eli Qiao (taget-9)
         Status: New

** Changed in: nova
     Assignee: (unassigned) => Eli Qiao (taget-9)

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https://bugs.launchpad.net/bugs/1346108

Title:
  nova doesn't release network when network_info is not  equal to 1

Status in OpenStack Compute (Nova):
  New

Bug description:
  nova 
  [tagett@stack-01 devstack]$ nova net-list 
  +--------------------------------------+---------+------+
  | ID                                   | Label   | CIDR |
  +--------------------------------------+---------+------+
  | d838074c-632c-43cf-8aae-24e17a2d1828 | public  | -    |
  | cc16209f-a7b4-44f6-8c8f-27ea7b0cc9ff | private | -    |
  | b745b2c6-db16-40ab-8ad7-af6da0e5e699 | private | -    |
  +--------------------------------------+---------+------+

  [tagett@stack-01 devstack]$ nova  --os-compute-api-version 2 interface-attach vm1 
  ERROR (ClientException): Failed to attach interface (HTTP 500) (Request-ID: req-a2da4531-0f22-46b2-94a9-ac9a7b0c350f)

  see from log

  2014-07-21 17:06:16.543 ERROR nova.compute.manager [req-
  375c0956-70f8-4d3a-b659-f48666787198 admin admin]
  allocate_port_for_instance returned 2 ports

  check nova show output

  [tagett@stack-01 devstack]$ nova  --os-compute-api-version 2 show vm1 
  +--------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  | Property                             | Value                                                                                                                                                            |
  +--------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  | OS-DCF:diskConfig                    | AUTO                                                                                                                                                             |
  | OS-EXT-AZ:availability_zone          | nova                                                                                                                                                             |
  | OS-EXT-SRV-ATTR:host                 | stack-01                                                                                                                                                         |
  | OS-EXT-SRV-ATTR:hypervisor_hostname  | stack-01                                                                                                                                                         |
  | OS-EXT-SRV-ATTR:instance_name        | instance-00000004                                                                                                                                                |
  | OS-EXT-STS:power_state               | 1                                                                                                                                                                |
  | OS-EXT-STS:task_state                | -                                                                                                                                                                |
  | OS-EXT-STS:vm_state                  | active                                                                                                                                                           |
  | OS-SRV-USG:launched_at               | 2014-07-21T08:22:55.000000                                                                                                                                       |
  | OS-SRV-USG:terminated_at             | -                                                                                                                                                                |
  | accessIPv4                           |                                                                                                                                                                  |
  | accessIPv6                           |                                                                                                                                                                  |
  | config_drive                         |                                                                                                                                                                  |
  | created                              | 2014-07-21T08:22:45Z                                                                                                                                             |
  | flavor                               | m1.nano (42)                                                                                                                                                     |
  | hostId                               | ce82402eef4265e64ca9544980007863759f58411f2afb81e1918d90                                                                                                         |
  | id                                   | 628b759d-d8ad-4646-b2c3-979151efdf83                                                                                                                             |
  | image                                | cirros-0.3.2-x86_64-uec (44c37b90-0ec3-460a-bdf2-bd8bb98c9fdf)                                                                                                   |
  | key_name                             | 11                                                                                                                                                               |
  | metadata                             | {}                                                                                                                                                               |
  | name                                 | vm1                                                                                                                                                              |
  | os-extended-volumes:volumes_attached | []                                                                                                                                                               |
  | private network                      | 192.168.1.16, 192.168.1.17, 192.168.1.18, 192.168.1.19, 192.168.1.20, 192.168.1.21, 192.168.1.22, 192.168.1.23, 192.168.1.25                                     |
  | progress                             | 0                                                                                                                                                                |
  | public network                       | 172.24.4.14, 172.24.4.15, 172.24.4.16, 172.24.4.17, 172.24.4.18, 172.24.4.19, 172.24.4.21                                                                        |
  | security_groups                      | default, default, default, default, default, default, default, default, default, default, default, default, default, default, default, default, default, default |
  | status                               | ACTIVE                                                                                                                                                           |
  | tenant_id                            | d7beb7f28e0b4f41901215000339361d                                                                                                                                 |
  | updated                              | 2014-07-21T08:22:55Z                                                                                                                                             |
  | user_id                              | fba8a67b69004320b2ace0b35aeebb18                                                                                                                                 |

  
  in guest side ,no new nic was added.
  we need to release network when allocate_port _for instace() return multiple networks.

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