Mission Statement
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1 ) Implement Neutron APIs using SDN principles, while keeping both Plug-in and Implementation fully under OpenStack project and governance.
2) 100% open source, contributors are welcome to partner and share a mutual vision.
3) Lightweight and Simple in terms of code size and complexity, so new users / contributors have a simple and fast ramp-up.
4) Aim for performance-intensive environments, where latency is a big deal, while being small and intuitive enough to run on small ones as well.
5) Completely pluggable design, easy to extend and enhance.
6) We truly believe in a distributed control plane.

http://docs.openstack.org/developer/dragonflow/distributed_dragonflow.html