The move to Internet Protocol Version 6 addresses has been underway for a number of years, as the world exhausted the supply of IPv4 internet addresses. The momentum in software-defined networking and the internet of things is driving faster adoption of IPv6 — and the need for testing of devices to ensure that they can be successfully deployed in IPv6 environments, according to Tim Winters, the University of New Hampshire InterOperability Lab’s senior executive for software and IP networking.