IPv6 network doesn't create namespace, dhcp port

[Sagi (Sergey) Shnaidman]

IPv6 networking has been changed during last commits.
Create network and IPv6 subnet with default settings. Create port in the network:
it doesn't create any namespace, it doesn't create DHCP port in the subnet, although port get IP from DHCP server.
Although IPv4 networking continues to work as required.

$ neutron net-create netto
Created a new network:
+-----------------+--------------------------------------+
| Field | Value |
+-----------------+--------------------------------------+
| admin_state_up | True |
| id | 849b4dbf-0914-4cfb-956b-e0cc5d8054ab |
| name | netto |
| router:external | False |
| shared | False |
| status | ACTIVE |
| subnets | |
| tenant_id | 5664b23312504826818c9cb130a9a02f |
+-----------------+--------------------------------------+

$ neutron subnet-create --ip-version 6 netto 2011::/64
Created a new subnet:
+-------------------+----------------------------------------------------------+
| Field | Value |
+-------------------+----------------------------------------------------------+
| allocation_pools | {"start": "2011::2", "end": "2011::ffff:ffff:ffff:fffe"} |
| cidr | 2011::/64 |
| dns_nameservers | |
| enable_dhcp | True |
| gateway_ip | 2011::1 |
| host_routes | |
| id | e10300d1-194f-4712-b2fc-2107ac3fe909 |
| ip_version | 6 |
| ipv6_address_mode | |
| ipv6_ra_mode | |
| name | |
| network_id | 849b4dbf-0914-4cfb-956b-e0cc5d8054ab |
| tenant_id | 5664b23312504826818c9cb130a9a02f |
+-------------------+----------------------------------------------------------+

$ neutron port-create netto
Created a new port:
+-----------------------+--------------------------------------------------------------------------------+
| Field | Value |
+-----------------------+--------------------------------------------------------------------------------+
| admin_state_up | True |
| allowed_address_pairs | |
| binding:vnic_type | normal |
| device_id | |
| device_owner | |
| fixed_ips | {"subnet_id": "e10300d1-194f-4712-b2fc-2107ac3fe909", "ip_address": "2011::2"} |
| id | 175eaa91-441e-48df-9267-bc7fc808dce8 |
| mac_address | fa:16:3e:26:51:79 |
| name | |
| network_id | 849b4dbf-0914-4cfb-956b-e0cc5d8054ab |
| security_groups | c7756502-5eda-4f43-9977-21cfb73b4d4e |
| status | DOWN |
| tenant_id | 5664b23312504826818c9cb130a9a02f |
+-----------------------+--------------------------------------------------------------------------------+

$ neutron port-list | grep e10300d1-194f-4712-b2fc-2107ac3fe909
| 175eaa91-441e-48df-9267-bc7fc808dce8 | | fa:16:3e:26:51:79 | {"subnet_id": "e10300d1-194f-4712-b2fc-2107ac3fe909", "ip_address": "2011::2"} |

there is no DHCP port

$ ip netns
qrouter-b7f94a05-8b02-4221-9330-bb2d470f6b0c
(default namespace form devstack install)

[Xu Han Peng (xuhanp)]

I can recreate this problem in my env.

[Sagi (Sergey) Shnaidman (sshnaidm)]

Yeah, seems like it was an issue in my devstack installation.
With fresh install it's not reproducible.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/123671

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/juno
Review: https://review.openstack.org/131763

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/123671
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=1b66e11b5d8c0b3de0610ca02c3e10b6f64ae375
Submitter: Jenkins
Branch: master

commit 1b66e11b5d8c0b3de0610ca02c3e10b6f64ae375
Author: Xu Han Peng <email address hidden>
Date: Wed Sep 24 17:37:23 2014 +0800

    Create DHCP port for IPv6 subnet

    There is a bug in dhcp agent code that when first port is created
    in an IPv6 subnet, DHCP port is not automatically created.

    This fix resolves this problem by removing the IP version check
    in configure_dhcp_for_network method.

    Change-Id: If3f405d367a7099d9f33d72d11ffcb7a393abe23
    Closes-Bug: #1367500

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/131763
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=8575fe95a6f1b46fb8ad645f26928471d5f53c9e
Submitter: Jenkins
Branch: stable/juno

commit 8575fe95a6f1b46fb8ad645f26928471d5f53c9e
Author: Xu Han Peng <email address hidden>
Date: Wed Sep 24 17:37:23 2014 +0800

    Create DHCP port for IPv6 subnet

    There is a bug in dhcp agent code that when first port is created
    in an IPv6 subnet, DHCP port is not automatically created.

    This fix resolves this problem by removing the IP version check
    in configure_dhcp_for_network method.

    Change-Id: If3f405d367a7099d9f33d72d11ffcb7a393abe23
    Closes-Bug: #1367500
    (cherry picked from commit 1b66e11b5d8c0b3de0610ca02c3e10b6f64ae375)

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/icehouse
Review: https://review.openstack.org/163783

[OpenStack Infra (hudson-openstack)]

Change abandoned by Alexey I. Froloff (<email address hidden>) on branch: stable/icehouse
Review: https://review.openstack.org/163783
Reason: Not saying that I agree, but IPv6 support in Icehouse is not complete. There were big improvements in Juno/Kilo and our usage scenario makes certain assumptions, which doesn't fit everyone.