FRR is a well traveled and well established routing suite. It has a comprehensive and very complete stable of protocol support, which is ever expanding. In this episode, Chris Y., David, and Nick chat with Donald Sharp about some of the finer details of the newer protocol support including IPv6 FlowSpec, BGP BMP, and IS-IS-SR. We delve into the finer points of component integration, discuss the nuance of how tunneling interfaces work, take a walk down the edge of why IS-IS is less traveled (including some of the fun protocol details therein). We even give a pretty fun little jaunt into the origin story of FRR.