Top down approach will focus on a VIM-agnostic VM with IPv6 capability. In this approach, we will focus on VM's IPv6 capability which is independent of OpenStack or similar. Related features and requirement will be explored.
Bottom up approach will focus on exploring current IPv6 capabilities in Neutron, and how to set it up. Known gaps will be documented.
Top down approach and bottom up approach will converge at some point, where further gaps will be identified between VM's IPv6 requirement and underlying IPv6 capability in Neutron.