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[Andreas Scheuring <andreas.scheuring@xxxxxxxxxx>]

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

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https://bugs.launchpad.net/bugs/1423484

Title:
  dhcpv6-stateful: error message in contradiction to spec

Status in neutron:
  Invalid

Bug description:
  The spec [1] points out how a subnet configured with ipv6 address mode dhcpv6-stateful and ra mode none should behave:
  "VM obtains IPv6 address and optional info from dnsmasq using DHCPv6 stateful" [1]

  Now creating such an subnet and adding it as routers interface resulted in the following error message:
  neutron subnet-create --name subnet_ipv6-network --enable-dhcp --ip-version 6 --ipv6-address-mode dhcpv6-stateful ipv6-network 2003::/64
  Created a new subnet:
  +-------------------+----------------------------------------------------------+
  | Field             | Value                                                    |
  +-------------------+----------------------------------------------------------+
  | allocation_pools  | {"start": "2003::2", "end": "2003::ffff:ffff:ffff:fffe"} |
  | cidr              | 2003::/64                                                |
  | dns_nameservers   |                                                          |
  | enable_dhcp       | True                                                     |
  | gateway_ip        | 2003::1                                                  |
  | host_routes       |                                                          |
  | id                | 4c3f8b16-633c-492c-964e-20cbd4f0b30a                     |
  | ip_version        | 6                                                        |
  | ipv6_address_mode | dhcpv6-stateful                                          |
  | ipv6_ra_mode      |                                                          |
  | name              | subnet_ipv6-network                                      |
  | network_id        | 2bbd0b0c-0809-43b8-a98f-4f552dcba4d3                     |
  | tenant_id         | 3ccda9db620a4d13940f9e79f12d5940                         |
  +-------------------+----------------------------------------------------------+
  neutron router-interface-add router1 subnet_ipv6-network
  Bad router request: IPv6 subnet 4c3f8b16-633c-492c-964e-20cbd4f0b30a configured to receive RAs from an external router cannot be added to Neutron Router.

  --> This seems to be in contradiction to what described in the spec!

  [1] https://review.openstack.org/#/c/101306/8/specs/juno/ipv6-radvd-
  ra.rst

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