Hi All, I`m trying to deploy VM with IPv6 on stx-openstack, so I create the subnet by below command and I`ve tried both slaac and dhcpv6-stateful, but the VM didn`t get correct IPv6 address inside. neutron subnet-create --tenant-id ${ADMINID} --name ${PUBLICSUBNET} --enable-dhcp --ip-version 6 --ipv6-ra-mode slaac --ipv6-address-mode slaac ${PUBLICNET} 2019::/64 I am able to see the IP on command show but VM actually doesn't gets correct IP. controller-0:/home/sysadmin# openstack server list +--------------------------------------+------+--------+---------------------------------------+--------+----------+ | ID | Name | Status | Networks | Image | Flavor | +--------------------------------------+------+--------+---------------------------------------+--------+----------+ | fe009153-49a0-49a8-95cb-302418016ca4 | vm1 | ACTIVE | public-net0=2019::f816:3eff:fe09:d386 | cirros | m1.tinny | | 8ac10f9c-ce7f-41c1-be91-c7c2a1675d38 | vm0 | ACTIVE | public-net0=2019::f816:3eff:fef8:a856 | cirros | m1.tinny | +--------------------------------------+------+--------+---------------------------------------+--------+----------+ The instance console log show some info: Starting network... udhcpc (v1.23.2) started Sending discover... Sending discover... Sending discover... Usage: /sbin/cirros-dhcpc <up|down> No lease, failing WARN: /etc/rc3.d/S40-network failed controller-0:/home/sysadmin# openstack subnet show cec4c9fe-3550-4305-af47-07cce8733bb8 +-------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ | Field | Value | +-------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ | allocation_pools | 2019::2-2019::ffff:ffff:ffff:ffff | | cidr | 2019::/64 | | created_at | 2019-11-28T07:13:11Z | | description | | | dns_nameservers | | | enable_dhcp | True | | gateway_ip | 2019::1 | | host_routes | | | id | cec4c9fe-3550-4305-af47-07cce8733bb8 | | ip_version | 6 | | ipv6_address_mode | slaac | | ipv6_ra_mode | slaac | | location | Munch({'project': Munch({'domain_name': 'default', 'domain_id': None, 'name': 'admin', 'id': u'76a69c24405a4ac1a98502219d674c48'}), 'cloud': 'openstack_helm', 'region_name': 'RegionOne', 'zone': None}) | | name | public-subnet0 | | network_id | f1b35934-b266-4768-b3e4-f043e7c282c3 | | prefix_length | None | | project_id | 76a69c24405a4ac1a98502219d674c48 | | revision_number | 0 | | segment_id | None | | service_types | | | subnetpool_id | None | | tags | | | updated_at | 2019-11-28T07:13:11Z | +-------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ is there any documents for reference? Or some advice? B&R weifei