We have started a discussion on the proper model to implement a Virtual Private Cloud (VPC) feature in openstack. I feel that there was not a lot of discussion on this topic in the past, and this may be because of the ML tags used. I am pointing out this discussion to this group with the Neutron tag as I think that networking is a big aspect of VPC. Please, jump in the discussion and share your comments. See http://lists.openstack.org/pipermail/openstack-dev/2014-February/026892.html and http://lists.openstack.org/pipermail/openstack-dev/2014-February/027171.html JC