Oct. 13, 2025
Many resources exist in order to test and report on IPv6 availability. One such site - test-ipv6.com - has been a staple for nearly 15 years. This site has a robust mirror network and has been proudly advertising free since its inception. However, running such resources can be costly in both time and money. Recently, the author and maintainer of the site had announce its retirement. This sent some shockwaves through the IPv6 community that eventually culminated in a realization that we rely on something that isn’t necessarily funded or permanent.
Oct. 9, 2025
Sometimes weirdness occurs within DNS if you’re on an IPv4 network and you connect to a dual-stack or v6-only VPN. Maybe the browser doesn’t connect, but you can still send pings, or vice versa. Is the OS getting confused about which stack and which order of interfaces to request services? Is the weird behavior being caused by Happy Eyeballs? Is it something else? These occurrances can be infuriating and very difficult to troubleshot.
Sep. 25, 2025
We’re diving into another IPv6 Basics today with the topic of dual-stack, which means running the IPv4 and IPv6 protocol stacks simultaneously. We get many questions about the implications of running dual-stack, and in this episode we’ll provide answers. We start by getting a little finicky about the definition of dual-stack, and then talk about when you should be using it, the impacts dual-stack may have on your network design, and how to think about dual-stack as a transition to an all (or mostly) IPv6 environment.
Sep. 17, 2025
I love some measurement data. On this IPv6 Buzz, Tom and I talk about measuring IPv6 and IPv6 statistics. We talk about why it’s useful to measure IPv6, how to track v6 deployment initiatives, and tools to help with your measurements. There is more there than one may think! In particular, we discuss my new project the IPv6 Global Statistics Dashboard, which aims to agfgregate all IPv6 statistical data regarding deployment.
Aug. 28, 2025
Transition technologies surrounding IPv6 can be a tad bit overwhelming in their subtle nuance. Keeping up with the differences is no easy task. Today’s show provides some education and advice about IPv6 transition mechanisms. We cover options such as NAT64, DNS64, PREF64, and more, as well as use cases. Also, if your technology vendors aren’t offering some of these mechanisms, ask for them – you’re probably not the only one who has an IPv6 transition project.