Explore the evolution of Berkeley Packet Filter (BPF) from its origins as a restricted C language to its current state as an extended and safe C variant in this 36-minute conference talk by Alexei Starovoitov at the Linux Plumbers Conference. Gain insights into the development process, key milestones, and technical advancements that have shaped BPF's transformation. Learn about the challenges faced and solutions implemented to enhance BPF's functionality and safety features while maintaining its efficiency for kernel programming and network packet filtering.