FD.io's Vector Packet Processor (VPP) is a fast, scalable layer 2-4
multi-platform network stack. It runs in Linux Userspace on multiple
architectures including x86, ARM, and Power architectures.

VPP's high performance network stack is quickly becoming the network stack of
choice for applications around the world.

Some VPP Use-cases include vSwitches, vRouters, Gateways, Firewalls and
Load-Balancers, to name a few.