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+============================================
+Provider Networking - upstream SLAAC Support
+============================================
+
+It should be possible to create a Provider Network in Neutron, that uses an
+upstream switch or router that advertises RA's - so that instances can use
+SLAAC to configure their IPv6 networking, while still utilizing the Neutron
+APIs for security group rules.
+
+https://blueprints.launchpad.net/neutron/+spec/ipv6-provider-nets-slaac
+
+Problem description
+===================
+
+A deployer of OpenStack that wishes to use IPv6 and already has
+configured IPv6 on northbound networking devices, may wish to
+advertise IPv6 routes by having non-OpenStack hardware transmit
+ICMPv6 Router Advertisement packets.
+
+
+Proposed change
+===============
+
+OpenStack Neutron should support this configuration, and display the
+correct IP address for instances, since Neutron has enough information
+to generate the EUI-64 address.
+
+Alternatives
+------------
+
+None
+
+
+Data model impact
+-----------------
+
+None
+
+REST API impact
+---------------
+
+None
+
+Security impact
+---------------
+
+None
+
+Notifications impact
+--------------------
+
+None
+
+Other end user impact
+---------------------
+
+* This change will require support in python-neutronclient for the two
+  IPv6 subnet attributes - which `is currently in review <https://review.openstack.org/#/c/75871/>`_
+
+Performance Impact
+------------------
+
+None
+
+Other deployer impact
+---------------------
+
+* This change will change the behavior of Neutron in specific
+  configurations, when the IPv6 attributes for Subnets are set.
+  Previously, the attributes were no-ops.
+
+Developer impact
+----------------
+
+None
+
+
+Implementation
+==============
+
+* Subnets will be created with the `ipv6_address_mode` set to `slaac`
+  and `ipv6_ra_mode` *not* set. 
+
+* Neutron will calculate the IP address of a port, using the MAC address
+  and the CIDR.
+
+Assignee(s)
+-----------
+
+Primary assignee:
+        scollins
+
+Work Items
+----------
+
+* `Support Subnets that are configured by external RAs <https://review.openstack.org/#/c/86044/>`_
+
+* `Ensure entries in dnsmasq belong to a subnet using DHCP <https://review.openstack.org/#/c/64578/>`_
+
+Dependencies
+============
+
+* The IPv6 Subnet Attributes must be returned in API calls.
+
+Testing
+=======
+
+* Add unit tests to support Subnets created with only the
+  `ipv6_address_mode` set.
+
+* Verify that ports with allocations from a subnet with
+  `ipv6_address_mode` set are not touched by the DHCP agent.
+
+Documentation Impact
+====================
+
+Documentation about this network configuration will need to be
+written.
+
+
+References
+==========
+
+* `Devstack for IPv6 in the Comcast lab <http://lists.openstack.org/pipermail/openstack-dev/2014-February/026589.html>`_