Netlink is a fundamental kernel/user messaging interface which has evolved over the years. At Netdev 0x13, David Ahern and Roopa Prabhu co-chaired the Netlink Workshop. Among topics of discussion: - status of changes over the last few years - kernel side filtering + classical, socket cbpf, ebpf extensions - reducing notifications - strict get requests - Growth of attributes and impacts to stack memory use - Lessons learnt and ideas to use the learnings - Performance improvements - Networking APIs that need to be converted to netlink(ethtool etc) More info: https://netdevconf.org/0x13/session.html?workshop-netlink