Seven years of IPv6 in production: Lessons from one million broadband subscribers

Guest Post: IPv6 deployment is often described as a protocol upgrade. In reality, operating IPv6 at broadband scale is a test of subscriber management, DHCP, CPE interoperability, observability, and operational processes. Over seven years, WorldLink Communications grew to more than one million dual-stack subscribers, with around 70% of traffic now carried over IPv6. Here are the lessons that mattered most.