Hi Ken, I'm using Newton on Debian Stretch with IPv6 prefix delegation (I'm not tested it from horizon, only from CLI). The configuration was carried out following the steps described here: http://www.debug-all.com/?p=187 Alberto -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack/attachments/20171008/de8c83c0/attachment.html>