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[Wei Hu <huwei.xtu@xxxxxxxxx>]

Public bug reported:

Create an IPv6 subnet with ipv6-ra-mode is slaac or stateless, and ipv6
-address-mode to none.  Neutron will also allocate an stateful address
to instance, which is not the instance actually get.

[root@node1 ~]# neutron subnet-show 5a2c86de-35f7-4d50-b490-9cf5f4edbe99
+-------------------+-------------------------------------------------------------------+
| Field             | Value                                                             |
+-------------------+-------------------------------------------------------------------+
| allocation_pools  | {"start": "2001:200::10", "end": "2001:200::ffff:ffff:ffff:fffe"} |
|                                 | {"start": "2001:200::1", "end": "2001:200::e"}                    |
| cidr                          | 2001:200::/64                                                     |
| dns_nameservers   |                                                                   |
| enable_dhcp            | True                                                              |
| gateway_ip              | 2001:200::f                                                       |
| host_routes            |                                                                   |
| id                               | 5a2c86de-35f7-4d50-b490-9cf5f4edbe99                              |
| ip_version               | 6                                                                 |
| ipv6_address_mode |                                                                   |
| ipv6_ra_mode           | dhcpv6-stateless                                                  |
| name                           |                                                                   |
| network_id                 | 228afb74-bed4-4e66-9b5f-4bc56a37ee43                              |
| tenant_id                    | b7843e73eea547629f26afb764fc3bef                                  |
+-------------------+-------------------------------------------------------------------+

[root@node1 ~]# nova list
+--------------------------------------+--------------+--------+------------+-------------+----------------------------+
| ID                                               | Name         | Status | Task State | Power State | Networks                   |
+--------------------------------------+--------------+--------+------------+-------------+----------------------------+
| 1ef77bb5-fe7e-4f17-8fac-99e79d5abdd2 | ubuntu_less  | ACTIVE | -          | Running     | ipv6_gre=2001:200::12      |

** Affects: neutron
     Importance: Undecided
     Assignee: Wei Hu (huwei-xtu)
         Status: New

** Changed in: neutron
     Assignee: (unassigned) => Wei Hu (huwei-xtu)

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https://bugs.launchpad.net/bugs/1406436

Title:
  ipv6 subnet address mode should not only check "ipv6_address_mode" but
  also ipv6_ra_mode

Status in OpenStack Neutron (virtual network service):
  New

Bug description:
  Create an IPv6 subnet with ipv6-ra-mode is slaac or stateless, and
  ipv6-address-mode to none.  Neutron will also allocate an stateful
  address to instance, which is not the instance actually get.

  [root@node1 ~]# neutron subnet-show 5a2c86de-35f7-4d50-b490-9cf5f4edbe99
  +-------------------+-------------------------------------------------------------------+
  | Field             | Value                                                             |
  +-------------------+-------------------------------------------------------------------+
  | allocation_pools  | {"start": "2001:200::10", "end": "2001:200::ffff:ffff:ffff:fffe"} |
  |                                 | {"start": "2001:200::1", "end": "2001:200::e"}                    |
  | cidr                          | 2001:200::/64                                                     |
  | dns_nameservers   |                                                                   |
  | enable_dhcp            | True                                                              |
  | gateway_ip              | 2001:200::f                                                       |
  | host_routes            |                                                                   |
  | id                               | 5a2c86de-35f7-4d50-b490-9cf5f4edbe99                              |
  | ip_version               | 6                                                                 |
  | ipv6_address_mode |                                                                   |
  | ipv6_ra_mode           | dhcpv6-stateless                                                  |
  | name                           |                                                                   |
  | network_id                 | 228afb74-bed4-4e66-9b5f-4bc56a37ee43                              |
  | tenant_id                    | b7843e73eea547629f26afb764fc3bef                                  |
  +-------------------+-------------------------------------------------------------------+

  [root@node1 ~]# nova list
  +--------------------------------------+--------------+--------+------------+-------------+----------------------------+
  | ID                                               | Name         | Status | Task State | Power State | Networks                   |
  +--------------------------------------+--------------+--------+------------+-------------+----------------------------+
  | 1ef77bb5-fe7e-4f17-8fac-99e79d5abdd2 | ubuntu_less  | ACTIVE | -          | Running     | ipv6_gre=2001:200::12      |

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