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[Steven Kaufer <kaufer@xxxxxxxxxx>]

Public bug reported:

The IP address filtering logic implemented in the compute API can duplicate instances if a given instance either:
- Has a fixed IP address in more then 1 network that matches the filter
- Has more then 1 fixed IP address in the same network matches the filter

For example:

$ nova list
+-----+-----------------+-------------------------------------------------+
| ID  | Name            | Networks                                        |
+-----+-----------------+-------------------------------------------------+
| 123 | InstanceTest    | gre_shared_1=192.168.0.11; network=194.168.0.14 |
| 456 | InstanceOne     | gre_shared_1=192.168.0.3                        |
+-----+-----------------+-------------------------------------------------+

$ nova list --ip 19
+-----+-----------------+-------------------------------------------------+
| ID  | Name            | Networks                                        |
+-----+-----------------+-------------------------------------------------+
| 123 | InstanceTest    | gre_shared_1=192.168.0.11; network=194.168.0.14 |
| 123 | InstanceTest    | gre_shared_1=192.168.0.11; network=194.168.0.14 |
| 456 | InstanceOne     | gre_shared_1=192.168.0.3                        |
+-----+-----------------+-------------------------------------------------+

** Affects: nova
     Importance: Undecided
     Assignee: Steven Kaufer (kaufer)
         Status: New

** Description changed:

  The IP address filtering logic implemented in the compute API can duplicate instances if a given instance either:
  - Has a fixed IP address in more then 1 network that matches the filter
  - Has more then 1 fixed IP address in the same network matches the filter
  
  For example:
  
  $ nova list
- +--------------------------------------+-----------------+-------------------------------------------------+
- | ID                                   | Name            | Networks                                        |
- +--------------------------------------+-----------------+-------------------------------------------------+
- | 3fd9a96c-b71b-4121-934c-c7c316a5fe69 | InstanceTest    | gre_shared_1=192.168.0.11; network=194.168.0.14 |
- | 783d89a6-bad0-461d-8684-3328c8e270a3 | InstanceOne     | gre_shared_1=192.168.0.3                        |
- +--------------------------------------+-----------------+-------------------------------------------------+
+ +-----+-----------------+-------------------------------------------------+
+ | ID  | Name            | Networks                                        |
+ +-----+-----------------+-------------------------------------------------+
+ | 123 | InstanceTest    | gre_shared_1=192.168.0.11; network=194.168.0.14 |
+ | 456 | InstanceOne     | gre_shared_1=192.168.0.3                        |
+ +-----+-----------------+-------------------------------------------------+
  
  $ nova list --ip 19
- +--------------------------------------+-----------------+-------------------------------------------------+
- | ID                                   | Name            | Networks                                        |
- +--------------------------------------+-----------------+-------------------------------------------------+
- | 3fd9a96c-b71b-4121-934c-c7c316a5fe69 | InstanceTest    | gre_shared_1=192.168.0.11; network=194.168.0.14 |
- | 3fd9a96c-b71b-4121-934c-c7c316a5fe69 | InstanceTest    | gre_shared_1=192.168.0.11; network=194.168.0.14 |
- | 783d89a6-bad0-461d-8684-3328c8e270a3 | InstanceOne     | gre_shared_1=192.168.0.3                        |
- +--------------------------------------+-----------------+-------------------------------------------------+
+ +-----+-----------------+-------------------------------------------------+
+ | ID  | Name            | Networks                                        |
+ +-----+-----------------+-------------------------------------------------+
+ | 123 | InstanceTest    | gre_shared_1=192.168.0.11; network=194.168.0.14 |
+ | 123 | InstanceTest    | gre_shared_1=192.168.0.11; network=194.168.0.14 |
+ | 456 | InstanceOne     | gre_shared_1=192.168.0.3                        |
+ +-----+-----------------+-------------------------------------------------+

** Changed in: nova
     Assignee: (unassigned) => Steven Kaufer (kaufer)

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https://bugs.launchpad.net/bugs/1417798

Title:
  IP filtering can include duplicate instances

Status in OpenStack Compute (Nova):
  New

Bug description:
  The IP address filtering logic implemented in the compute API can duplicate instances if a given instance either:
  - Has a fixed IP address in more then 1 network that matches the filter
  - Has more then 1 fixed IP address in the same network matches the filter

  For example:

  $ nova list
  +-----+-----------------+-------------------------------------------------+
  | ID  | Name            | Networks                                        |
  +-----+-----------------+-------------------------------------------------+
  | 123 | InstanceTest    | gre_shared_1=192.168.0.11; network=194.168.0.14 |
  | 456 | InstanceOne     | gre_shared_1=192.168.0.3                        |
  +-----+-----------------+-------------------------------------------------+

  $ nova list --ip 19
  +-----+-----------------+-------------------------------------------------+
  | ID  | Name            | Networks                                        |
  +-----+-----------------+-------------------------------------------------+
  | 123 | InstanceTest    | gre_shared_1=192.168.0.11; network=194.168.0.14 |
  | 123 | InstanceTest    | gre_shared_1=192.168.0.11; network=194.168.0.14 |
  | 456 | InstanceOne     | gre_shared_1=192.168.0.3                        |
  +-----+-----------------+-------------------------------------------------+

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