In Juno and before, the End User needed to know the specific subnet CIDR at the time of allocation. This made it difficult to automate the allocation of subnets – especially for external or other routable subnets. In OpenStack’s Kilo, Neutron adds Subnet Pools, allowing the Operator to define a network space from which tenants can automatically allocate smaller subnets, for both internal and external networks. …Full session details here: