Murano does support both Nova Network and Quantum, and support advanced network management in case of Quantum. Advanced network management essentially means explicit (from Murano point of view) network management per environment. Murano creates private network and attache it to the first found external network for each environment. This functionality is based on Quantum deployed as Per-tenant Routers with Private Networks and not going to work when Quantum is deployed as Mixed Flat and Private Network.
Mixed Flat and Private Network supported in Nova Network and it is default configuration for Murano v0.3.
With advanced networking schemes like Per-tenant Routers with Private Networks additional configuration and patches for OpenStack components are required. Different set of templates for Heat stacks is used in Murano Conductor.
