O3FA: A Scalable Finite Automata-based Pattern-Matching Engine for Out-of-Order Deep Packet Inspection. Xiaodong Yu, Wu-chun Feng, Danfeng (Daphne) Yao, Michela Becchi. In Proceedings of the ACM/IEEE Symposium on Architectures for Networking and Communications Systems, Santa Clara, CA, March 2016.