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[Henry Gessau <gessau@xxxxxxxxx>]

Now invalid because updating of ipv6 mode attributes has been disabled.

** Changed in: neutron
       Status: In Progress => Invalid

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https://bugs.launchpad.net/bugs/1363064

Title:
  Cannot set only one of IPv6 attributes while second is None

Status in neutron:
  Invalid

Bug description:
  When trying to update ipv6 subnet's (created with default None
  attributes) ra_mode or address_mode operation is not permited
  (although it should be) :

  neutron subnet-create --ip-version 6 Test fe80:8888::/40

  +-------------------+---------------------------------------------------------------------------+
  | Field             | Value                                                                     |
  +-------------------+---------------------------------------------------------------------------+
  | allocation_pools  | {"start": "fe80:8888::2", "end": "fe80:8888:ff:ffff:ffff:ffff:ffff:fffe"} |
  | cidr              | fe80:8888::/40                                                            |
  | dns_nameservers   |                                                                           |
  | enable_dhcp       | True                                                                      |
  | gateway_ip        | fe80:8888::1                                                              |
  | host_routes       |                                                                           |
  | id                | 720d4f22-ee49-40c9-a865-cb31defcf6bd                                      |
  | ip_version        | 6                                                                         |
  | ipv6_address_mode |                                                                           |
  | ipv6_ra_mode      |                                                                           |
  | name              |                                                                           |
  | network_id        | 124826a4-77ed-4682-8e39-d9090689cb85                                      |
  | tenant_id         | d2b47b4677fb4e30ad1961fb7d51ffdc                                          |
  +-------------------+---------------------------------------------------------------------------+

  neutron subnet-update 720d4f22-ee49-40c9-a865-cb31defcf6bd --ipv6_address_mode slaac
  Invalid input for operation: ipv6_ra_mode set to 'None' with ipv6_address_mode set to 'slaac' is not valid. If both attributes are set, they must be the same value.

  neutron subnet-update 720d4f22-ee49-40c9-a865-cb31defcf6bd --ipv6_ra_mode slaac
  Invalid input for operation: ipv6_ra_mode set to 'slaac' with ipv6_address_mode set to 'None' is not valid. If both attributes are set, they must be the same value.

  Clearly as message states leaving one attribute not set should be allowed (also I've found spec where attributes combinations are disccused)
  http://specs.openstack.org/openstack/neutron-specs/specs/juno/ipv6-radvd-ra.html

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