Jul. 23, 2026
Andrew Palardy joins the hosts to discuss how Tayga, the open-source NAT64 daemon for Linux, is being updated to ensure it is up to date with all the current RFCs. The discussion covers RFC compliance updates and UDP checksum fixes for resolving connectivity problems, plus new eBPF CLAT support arriving in NetworkManager to provide automatic CLAT functionality.
Have a listen:
Podcast link: IPB204: Tayga and IPv6 Translation Show links:
Jun. 25, 2026
Network Address Translation (NAT), a foundational element of IPv4, faces critical reassessment as IPv6 deployment shifts the landscape. Ed and Tom evaluate the evolving role of NAT, questioning whether traditional translation models remain necessary when stateful packet inspection offers more robust, transparent security solutions.
Have a listen:
Podcast link: IPB203: The Death of NAT Show links:
“Fanboy” series – IPv6 and NATs
Jun. 11, 2026
The episode explores gaining practical IPv6 experience through hands-on deployment. Guest John Osmon discusses setting up a personal IPv6 lab environment, including low-cost home lab options and how this experience has increased his confidence in tackling IPv6 projects.
Have a listen:
Podcast link: IPB202: How to Get Hands-On IPv6 Deployment Experience Show links:
“Where in the contract does it say you can’t NAT IPv6?" “So, you want to try IPv6?
May. 28, 2026
Today’s conversation centers around a new Best Current Practices (BCP) RFC draft written by Jordi Palet Martinez. Our hosts explore the document for service providers and enterprises, including prefix sizing for point-to-point links, the pros and cons of numbering choices, and best practices for prefix pool allocation.
Have a listen:
Podcast link: IPB201: The Never-Ending Prefix Debate: Revisiting Best Current Practices Show links:
IPv6 Prefix Assignment to End-Sites
May. 14, 2026
Why is IPv6 so much more complicated than IPv4? Could a newer version such as IPv8 be the solution? Guest Brian Carpenter joins our hosts to explain that many of IPv6’s complications are mathematical necessities. They point out that IPv6 has a 30 year head start on any IPv8 proposal that would struggle with many of the same issues. They also discuss features like automatic address configuration and the slow but inevitable global adoption of IPv6.
Apr. 30, 2026
Tom Coffeen and Nick Buraglio welcome Fern Cummings to talk about developing code for IPv6. Fern argues that moving to IPv6 restores end-to-end connectivity, which reduces complexity for developers without the need for “ridiculous hacks” caused by IPv4 NAT. The discussion offers practical advice on avoiding common developer traps, and covers financial benefits such as reduced logging costs and improved security.
Have a listen:
Podcast link: IPB199: Developing IPv6-Friendly Code
Apr. 16, 2026
Today our hosts discuss IPv6 Privacy and Temporary Addresses to clarify how address provisioning can potentially work for host operating systems. The discussion covers the difference between permanent and temporary privacy addresses, their uses, and how interface identifiers are assigned to hosts.
Have a listen:
Podcast link: IPB198: IPv6 Privacy and Temporary Addresses
Apr. 2, 2026
Today our hosts discuss the essential role of Stateless Address Autoconfiguration (SLAAC) in successfully deploying an IPv6-mostly network. SLAAC is required to assign a unique IPv6 address to the Customer-side Translator (CLAT), which allows devices to operate on IPv6. However, enterprise operators might prefer using DHCPv6 for network tracking and accountability, potentially trapping them in complex dual-stack environments.
Have a listen:
Podcast link: IPB197: SLAAC and the End of DHCP?
Mar. 19, 2026
One of the early design principles of the Internet was end-to-end connectivity: that is, every device on the Internet would be publicly addressable, and every device could share its resources or provide services. The hosts examine whether this foundational principle remains realistic for IPv6, discussing its historical erosion in IPv4 and the IETF’s continued adherence to it.
Have a listen:
Podcast link: IPB196: Is End-to-End Connectivity the Right Goal?
Mar. 5, 2026
The hosts propose using IPv6 as a low-risk environment for learning network automation. Since production traffic typically runs on IPv4, experimenting with automated configurations on IPv6 allows engineers to get a two-for-one experience learning both IPv6 and automation with low risk of disruption.
Have a listen:
Podcast link: IPB195: Start Network Automation with IPv6! Show links:
Netmiko Library FREE course – Learning Python: Python for Network Engineers
Feb. 19, 2026
Ed, Nick, and Tom discuss the need for Network Address Translation v6 to v6 (NAT66). While Network Prefix Translation (NPTv6) exists, its limitations make it insufficient for real-world business needs. They also highlight that without a standardized NAT66, the market is forcing vendors to implement their own, hindering widespread IPv6 adoption.
Have a listen:
Podcast link: IPB194: Navel Gazing at NAT in IPv6 Show links:
IPv6-to-IPv6 Network Address Translation (NAT66) RFC 6296: IPv6-to-IPv6 Network Prefix Translation
Feb. 5, 2026
Are you struggling to get IPv6 working, whether in a lab or even a pilot deployment? Ed, Nick, and Tom walk through the essentials of IPv6 troubleshooting, revealing the non-negotiable differences between IPv4 and IPv6 that can trip up even experienced network engineers. They break down why blocking all ICMP, like in v4, will instantly break your v6 network and why understanding multicast is critical to scalable IPv6.
Have a listen:
Jan. 22, 2026
Thinking of setting up an IPv6 lab this year? Our hosts dive into a major update on building and testing modern IPv6 networks, focusing on the game-changing “IPv6-mostly” architecture. They break down the essential components you need to get this working, including DHCP Option 108 and the nitty gritty of client support.
In this episode, Tom incorrectly identifies Debian 13 as the platform he got IPv6-mostly working on when in reality it was CentOS 9 Stream.
Jan. 8, 2026
Will Microsoft’s CLAT bring widespread adoption rates for IPv6? Will there be significant advancements in corporate and cloud adoption as well? Will this finally be the year we see the fix for the RFC 6724? Ed Horley, Tom Coffeen, and Nick Buraglio make their predictions for the new year in the first IPv6 Buzz of 2026.
Have a listen:
Episode Links:
IPv6.army RFC6724 options picker
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.
Aug. 18, 2025
Over the years one of the most common responses received when asking “does your $widget support IPv6?” is “well, no one has asked for it”, or “no one actually uses IPv6”. To myself and others that have been actually using IPv6 for well over 20 years, this is a tired, uninformed, and overall dull response to a legitimate feature question. Over the last 4 years, and likely due to the explosion of IPv6 deployments, this has become significantly less common of a reply.
Aug. 14, 2025
So many great questions! You’ve sent in questions and on this IPv6 Buzz episode Ed, Nick, and Tom answer them. Questions include using DHCPv6 versus SLAAC in a home network, IPv6 and email services, a NAT66 recap, and more. Stay tuned for full episodes coming up that cover Path MTU discovery and IPv6 and containers.
Listen here:
Episode Links:
Google IPv6 Statistics My Updated Fiber7-X VyOS 1.5 Config – John Howard’s blog RFC 6296 – IPv6-to-IPv6 Network Prefix Translation RFC 6724 Update 25 – Prioritizing known-local IPv6 ULAs through address selection policy – IETF Transcript
Jul. 31, 2025
There are many, many reasons, methods, and orders of operation when starting out in IPv6. In this episode of IPv6 Buzz, Tom and I continue our IPv6 Basics series discussing deployment. We’ll help you sort out why you should deploy IPv6, things to consider before starting a deployment, and what approach you should take such as “inside out” vs. “outside in” and when you should deploy IPv6. Lastly we explain why you should seek out some training for deploying IPv6.
Jul. 17, 2025
In this episode of the IPv6 Buzz podcast, we dive straight in and talk about common misconceptions regarding DNS and IPv6. We’ve heard these often enough that we felt we should talk through each one. We cover issues including what kind of DNS record types can be returned via IPv6 (and IPv4, too), more details on what really goes on with Happy Eyeballs, and combining A/AAAA records types and security protocols like DoT/DoH/DoQ.
Jun. 12, 2025
The Hexabuild team is providing a new community resource, an IPv6 compatibility checker, for those trying to figure out IPv6 network hardware and software compatibility. It’s currently in an alpha version. We talk about what inspired it, what it does, and possible future updates. We also want to get your feedback on whether this is useful and something we should continue to expand. It’s far from perfect, but it is a start.
May. 29, 2025
Point to point link addressing. One would think it to be a simple formula…but alas, like everything else, there are strong opinions and lots of options. In this episode, we chat about point-to-point links. We cover what should and shouldn’t be done, and discuss why following RFC’s doesn’t always get you to the right place. We dig into questions including, but not limited to
Don’t we just use link-local addresses for point-to-points?
May. 16, 2025
Returning with more IPv6 basics, we dive deep into that often overlooked and frequently ignored address family - link-local addresses. Link-local addresses are unicast addresses used for addressing on a single link. The intent of link-local addresses is to let devices that may not have a router or global unicast address allocation mechanism still be able to communicate on a network segment. On today’s show we dig into how link-local addresses work, what to do with them, potential issues with link-local addresses, and more.
May. 1, 2025
On this episode of IPv6 Buzz, we have a very special guest, Tommy Jensen, a Senior Technical PM Strategist at Microsoft who is on to speak with us about IPv6 support in Windows. Tommy shares what he hears from enterprises that are moving toward IPv6-mostly, strategies for dealing with older applications and devices that expect IPv4, and how the customer conversations he’s having about IPv6 now are more engaged and serious compared to a few years ago.
Apr. 18, 2025
I was very excited for this episode. James Harr, a fellow engineer from the research and education community came up with a great project called the IPv6-Pod, which was initially funded by ARIN. It aims to provide a simple way to test software and services to see if they work in a variety of IPv6 environments, including v6-only, dual-stack, and others? This project provides a device, at no cost to the applicant, that comes with a variety of v6 test networks.
Apr. 7, 2025
Listener comments and questions are always interesting. In this episode we talk through some listeners questions that have come in via the Follow Up on packetpushers.net .
We cover questions regarding IPv6 for small businesses, then go even smaller and answer a question about IPv6 for home networks. Lastly, we have a quick discussion about Path MTU discovery with IPv6 (spoiler: we’re planning a whole episode on this topic in the future).
Mar. 23, 2025
A subject after my own heart. Continuing the IPv6 Basics series with an episode on IPv6 routing essentials. We start with a comparison of various routing protocols: RIP, OSPF, IS-IS, EGP, and BGP. We look at pros and cons of each, and discuss challenges such as dual stack IPv4 and IPv6 network implementation, memory and resource use with IPv6, and link local addresses.
Take a listen here:
Mar. 11, 2025
In this episode of the IPv6 Buzz, we dive into two RFCs for discovering IPv6 prefixes: RFC7050 and RFC8781 . Why these two? First, 8781 is being proposed as preferential to 7050 . Second, I happen to be a co-author on the draft that proposes the preference for 8781 and as usual, I have “insights” to share.
We start with some background on RFC 7050, including the limitations that led to the development of RFC 8781.
Feb. 20, 2025
The UK IPv6 Council is one of the longest running non-profit technology user groups promoting and sharing best practices on IPv6 deployment and adoption. On this episode of IPv6-Buzz we speak with Veronika McKillop , President of the UK IPv6 Council about their 10 year history and what is planned for the future.
Feb. 7, 2025
I’ve written and talked about SCinet many times in the past. As a 20 year emeritus engineer having worked within every group within SCinet , this was a really personally satisfying podcast for me. In this episode of IP Buzz , we talk through the details of deploying IPv6 mostly as defined by RFC 8925 with Tom Costello of Argonne National Lab .
Listen here or subscribe at the link above.
Jan. 23, 2025
Well! New year, new podcast. I’ve been fortunate enough to move from “most frequent guest” to full-on co-host of IPv6Buzz , and I am pretty freakin' stoked if I am being completely honest!
We’re out of the gate with a bang, too. This first podcast of 2025 (and first with me as a co-host) is diving right in with some bold predictions:
IPv6 adoption should cross 50% in 2025.
We discuss the implications and significance of IPv6 adoption reaching this milestone.