Hi , Could anyone please check the bug below? https://bugs.launchpad.net/neutron/+bug/1467791 This bug description: When the created network contains one ipv4 subnet and an ipv6 subnet which turned on slaac or stateless. When I create a port use cmd like: neutron port-create --fixed-ip subnet_id=$[ipv4_subnet_id] $[network_id/name] The specified fixed-ip is ipv4_subnet, but the returned port contained the ipv6 subnet. If user just want a port with ipv4 , why returned port had allocated an ipv6 address. And I know this is an design behavior from http://specs.openstack.org/openstack/neutron-specs/specs/kilo/multiple-ipv6-prefixes.html#proposed-change But we are still confused about this operation. Thank you anyone could help for confirm this issue , and wish you return the message asap. ZhaoBo -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack-dev/attachments/20150720/401c95c0/attachment.html>