Software-Defined Networking (SDN) is a promising architecture that disentangles the control plane from the data plane. A mainstream southbound protocol for controller-to-switch communication in SDN is OpenFlow. In an OpenFlow-enabled network, SDN switches are connected to the logically centralized control plane, which issues control messages to direct packet forwarding and processing in the data plane. Given that the finite capacity of physical flow tables of switches, typically implemented with ternary content addressable memory (TCAM), attack...