To get router advertisements, create a neutron router and add an interface to your subnet.
** Changed in: neutron Status: New => Invalid -- You received this bug notification because you are a member of Yahoo! Engineering Team, which is subscribed to neutron. https://bugs.launchpad.net/bugs/1638130 Title: SLaaC or DHCPv6 stateless doesn't work on isolated Neutron networks Status in neutron: Invalid Bug description: On an isolated IPv6 network no router advertisements are sent, so the instances are unable to discover what prefix to use. To enabled instances to discover which prefixes are on-link router advertisements with a router lifetime of zero should be sent (from the DHCP namespace) https://tools.ietf.org/html/rfc4861#page-43. Dnsmasq seems to support this via --ra-param option: --ra-param=<interface>,[high|low],[[<ra-interval>],<router lifetime>] Set non-default values for router advertisements sent via an interface. The priority field for the router may be altered from the default of medium with eg --ra-param=eth0,high. The interval between router advertisements may be set (in seconds) with --ra-param=eth0,60. The lifetime of the route may be changed or set to zero, which allows a router to advertise prefixes but not a route via itself. --ra-parm=eth0,0,0 (A value of zero for the interval means the default value.) All three parameters may be set at once. --ra-param=low,60,1200 The interface field may include a wildcard. Alternatively radvd could be used within the DHCP namespace. Steps to reproduce: $ openstack network create isolated-ipv6 +---------------------------+--------------------------------------+ | Field | Value | +---------------------------+--------------------------------------+ | admin_state_up | UP | | availability_zone_hints | | | availability_zones | | | created_at | 2016-10-31T20:14:13Z | | description | | | headers | | | id | 7044aa9b-937f-4f7d-9073-00512f88a066 | | ipv4_address_scope | None | | ipv6_address_scope | None | | mtu | 1450 | | name | isolated-ipv6 | | port_security_enabled | True | | project_id | 6d80770322b64b8ba57038788004e93e | | project_id | 6d80770322b64b8ba57038788004e93e | | provider:network_type | vxlan | | provider:physical_network | None | | provider:segmentation_id | 11 | | revision_number | 3 | | router:external | Internal | | shared | False | | status | ACTIVE | | subnets | | | tags | [] | | updated_at | 2016-10-31T20:14:13Z | +---------------------------+--------------------------------------+ $ openstack subnet create --ip-version 6 --ipv6-ra-mode slaac --ipv6-address-mode slaac --network 7044aa9b-937f-4f7d-9073-00512f88a066 --subnet-range fddd:fd72:8298::/64 isolated-ipv6-subnet +-------------------+--------------------------------------------------------+ | Field | Value | +-------------------+--------------------------------------------------------+ | allocation_pools | fddd:fd72:8298::2-fddd:fd72:8298:0:ffff:ffff:ffff:ffff | | cidr | fddd:fd72:8298::/64 | | created_at | 2016-10-31T20:17:44Z | | description | | | dns_nameservers | | | enable_dhcp | True | | gateway_ip | fddd:fd72:8298::1 | | headers | | | host_routes | | | id | 96bf9b9f-736b-46c3-86f0-029c6d5f6e92 | | ip_version | 6 | | ipv6_address_mode | slaac | | ipv6_ra_mode | slaac | | name | isolated-ipv6-subnet | | network_id | 7044aa9b-937f-4f7d-9073-00512f88a066 | | project_id | 6d80770322b64b8ba57038788004e93e | | project_id | 6d80770322b64b8ba57038788004e93e | | revision_number | 2 | | service_types | | | subnetpool_id | None | | updated_at | 2016-10-31T20:17:44Z | +-------------------+--------------------------------------------------------+ $ openstack server create --image cirros-0.3.4-x86_64-uec --flavor m1.tiny --nic net-id=7044aa9b-937f-4f7d-9073-00512f88a066 test-server +--------------------------------------+----------------------------------------------------------------+ | Field | Value | +--------------------------------------+----------------------------------------------------------------+ | OS-DCF:diskConfig | MANUAL | | OS-EXT-AZ:availability_zone | | | OS-EXT-SRV-ATTR:host | None | | OS-EXT-SRV-ATTR:hypervisor_hostname | None | | OS-EXT-SRV-ATTR:instance_name | | | OS-EXT-STS:power_state | NOSTATE | | OS-EXT-STS:task_state | scheduling | | OS-EXT-STS:vm_state | building | | OS-SRV-USG:launched_at | None | | OS-SRV-USG:terminated_at | None | | accessIPv4 | | | accessIPv6 | | | addresses | | | adminPass | iTkyyFge6Z5C | | config_drive | | | created | 2016-10-31T20:19:34Z | | flavor | m1.tiny (1) | | hostId | | | id | f494a313-df9e-494e-a203-ced29d3e9759 | | image | cirros-0.3.4-x86_64-uec (2eee9b4a-a5d9-4de0-bc35-350093dab3b9) | | key_name | None | | name | test-server | | os-extended-volumes:volumes_attached | [] | | progress | 0 | | project_id | 6d80770322b64b8ba57038788004e93e | | properties | | | security_groups | [{u'name': u'default'}] | | status | BUILD | | updated | 2016-10-31T20:19:34Z | | user_id | 8666967e103a43bfb90aed2e107946a6 | +--------------------------------------+----------------------------------------------------------------+ Connect to the instance console and verify no IPv6 address aside from a link-local address is assigned. 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