When I pressed him for a real-life application that could be the result of the simpler networks that SDN promises, he didn’t disappoint. “You know how you have network neutrality now,” he asked. “What if the customer could flip it around and tell the service provider: ‘I’d like to give preference in my home network to Netflix.'”

via Light Reading – SDN’s Killer App: More Network Control.

What if the customer enforced that preference on their firewall?  They wouldn’t necessarily need this feature from their service provider.