There are one or two. The most prominent is Netmap (https://code.google.com/p/netmap/ https://code.google.com/p/netmap/) another is the Intel Dataplane Developm

There are one or two. The most prominent is Netmap (https://code.google.com/p/netmap/ https://code.google.com/p/netmap/) another is the Intel Dataplane Development Kit (DPDK - http://www.dpdk.org/ http://www.dpdk.org/. Both of these allow you to handle millions of real packets, per second from standard software. No lua coding required.