I want to request the inclusion of the support for Neutron Routed Networks in the Nova goals for the Ussuri cycle. As many of you might know, Routed networks is a feature in Neutron that enables the creation of very large virtual networks that avoids the performance penalties of large L2 broadcast domains (
https://www.openstack.org/videos/summits/barcelona-2016/scaling-up-openstack-networking-with-routed-networks). This functionality can be very helpful for large deployers who have the need to have one or a few large virtual networks shared by all their users and has been available in Neutron since very soon after the Barcelona Summit in 2016. But it is really useless until there is code in Nova that can schedule VMs to compute hosts based on the segments topology of the routed networks. Without it, VMs can land in compute hosts where their traffic cannot be routed by the underlying network infrastructure. I would like the Nova team to consider the following when making a decision about this request: