IPv6 Buzz

If you’re an Active Directory administrator or part of an enterprise network team working with one, this episode is for you. Ed literally wrote the book “Practical IPv6 for Windows Administrators” so Scott has fun interviewing him as today’s guest. Ed goes over how to diagram out your IPv6 deployment, including address allocation and making... Read more »

Alexandra Huides didn’t like IPv6 on her first encounter with it. Today she is globally renowned for spreading the IPv6 gospel and helping AWS customers adopt it. Alexandra joins the show today to share what changed her mind about IPv6 and what she sees change the minds of network engineers every day: Greater client traffic... Read more »

As part of our ongoing series on IPv6 basics, today we cover the differences you should be aware of between ICMPv4 and ICMPv6. Internet Control Message Protocol (ICMP) is the protocol that lets you test reachability: Pings, echoes, TCP connections, etc. We explain what you need to know and why you need to know it,... Read more »

When you chair the IPv6 Task Force for the United States Federal Government, you get a pretty good view of IPv6 implementation across the world and in every aspect of American society. That’s why we have Rob Sears on the show today. He gives us his perspective as chair of the task force charged with... Read more »

Today Tom, Scott, and Ed discuss the exciting announcement in IPv6 world: Microsoft is expanding its CLAT support in Windows 11. This means enterprises can be even more comfortable transitioning to a IPv6-only network: Now not only do they have DNS64 and NAT64 to translate IPv4 to IPv6, but they have CLAT for any apps... Read more »

Welcome to a crossover episode with the Packet Protector podcast! You’re already running IPv6, even if you don’t know it yet. Your remote users are using it at their homes, your printers come with it built into the kernel, your generals are using it on their mobile phones (check out our news headlines section). So... Read more »

For years, Johannes Weber has heard network engineers around the world repeat the myth that IPv6 is more of a hassle than IPv4. So he made a list: “Why IPv6 is better than IPv4.” Don’t worry, solving global address exhaustion isn’t on it. In this episode, Johannes goes over his list with precision and passion... Read more »

If you’ve been wondering about the double colons and letters you’re seeing in IPv6 addresses, this is the episode for you. Tom and Scott break down IPv6 addressing, starting with the basics of binary and taking you all the way through the etiquette of not using capital letters in Layer 3 addressing (we’re looking at... Read more »

Are you on the IPv6 hit list? Does your CPE device have Recommended Simple Security Capabilities? Are your ULA prefixes unique, but still manageable? Do you have a protection method structure or are you just hoping that the IPv6 space is so vast the bad guys will never find you? Tom Coffeen and Scott Hogg... Read more »

A round-up of IP address news to start the new year: Eric Vyncke of the IETF has created an RFC 6724 website that is an excellent time-saving tool for figuring out source destination address selection processes. AWS announces more IPv6 features and support, and adds a new charge for public IPv4 use. State actors, including... Read more »

These days, most network devices can speak both IPv4 and IPv6. A dual-stack approach can smooth the transition from one protocol to the other because organizations can get comfortable with IPv6 without having to make a hard cutover. However, they may get so comfortable that they never fully commit. In this episode Ed, Scott, and... Read more »

We kick off 2024 with a new limited series called “IPv6 Basics” for those listeners who might be new to this protocol or would like a refresher. Ed and Scott start with why IPv6 was needed and how it is different (and the same) as IPv4. Topics discussed include: Early drivers for IPv6 development IPv6... Read more »

In this episode Ed, Scott, and Tom talk about 2023 and what stood out to us as important for IPv6. Topics discussed include: Overall levels of IPv6 adoption IPv6 security in 2023 IETF efforts with IPv6 IPv6-only in the enterprise Thanks for listening! Show Links: IPv6 Deployment Status (RFC 9386), April 2023 – RFC Editor Four... Read more »

In this episode Ed, Scott, and Tom discuss the Customer-Side Translator (CLAT) function and its role in enabling client connectivity in IPv6-only networks. Topics discussed include: Traditional use of the CLAT and 464XLAT by mobile service providers How the CLAT may be used in enterprise IPv6-only networks Where DNS64/NAT64 doesn’t work and drives the need... Read more »

Network engineers and architects considering IPv6 can benefit from the experiences of those who have gone before them by avoiding the problems that have bedeviled other deployments. On today’s show, your hosts discuss three typical pitfalls and how to get over or around them without falling in. Those IPv6 pitfalls include: IPv4 thinking Deploying ULA... Read more »

DHCPv6 Prefix Delegation (DHCPv6-PD) is an IETF RFC that lets one router delegate a long-lived prefix, using DHCP, to a requesting router. What’s the need for this? As the RFC notes, some applications expect stable addresses. It also notes: It is appropriate for situations in which the delegating router does not have knowledge about the... Read more »

On today's IPv6 Buzz, we talk with Jason Gintert of the Ohio Internet Exchange about what's involved with running an IX and where IPv6 fits in to the picture. We also discuss Jason's work with the US Networking User Association, a group that brings together network engineers to share knowledge and learn from one another.

In this episode Tom and Scott explore Zero Trust Architecture (ZTA), where it aligns (and doesn't) with IPv6, and what the future might hold for both technologies.

Today's IPv6 Buzz episode dives into the topic of IPv6 address formatting, the do's and don'ts of representing an IPv6 address, and what guidance RFC 5952 provides for representing these very long addresses in text.

In today's IPv6 Buzz podcast, Ed, Scott, and Tom bring Nick Buraglio back on to the show to discuss IPv6 Unique Local Addressing and the latest activity at the IETF to attempt to address both protocol and operational challenges associated with RFC 6724.

In this episode, Ed, Scott, and Tom discuss IPv6 multicast, what it is, how it differs (and doesn't) from its IPv4 counterpart, and how it's used in production.

In this episode, Ed, Scott, and Tom get technical with a discussion of IPv6 Router Advertisements (RAs), what they are, what they're for, what information they contain, new and future RA options, and what you need to know about them to help deploy IPv6 effectively.

Today's IPv6 Buzz podcast riffs on a question raised in a Reddit thread that asks why you should use IPv6 when NAT exists. Tom, Ed, and Scott provide answers, and also discuss the complicated role of NAT in both IPv6 and IPv4 networks in the past, present, and future.

In this IPv6 Buzz episode, Ed, Scott, and Tom get technical (and maybe a little controversial) with a discussion about using IPv6 link-local addresses instead of globally scoped addresses (e.g., GUA and ULA) along with when and why you might choose to do so.

Today's IPv6 Buzz podcast gets into IPv6 architecture and subnetting including how geography fits into IPv6 subnetting, minimum allocation sizes from the RIR to end-users, whether current RIR policies will provide sufficient address space for a future-proof IPv6 architecture, and more. Our guest is Daryll Swer.

There's only going to be one episode 128 of IPv6 Buzz, and this is it. In this Cisco Country Digital Acceleration Program sponsored episode, co-hosts Ed Horley and Scott Hogg talk with Pradeep Kathail and Mark Townsley. Pradeep is the CTO of Enterprise Networking, and Mark Townsley is a Cisco Fellow in the Meraki Business Unit.

In this episode, Ed and Tom interview Scott on the topic of IPv6 security and firewalls. This is one of Scott's many areas of expertise as he is the co-author of IPv6 Security from Cisco Press. They discuss firewalls strategies, design and operational considerations, pros and cons of a dual-stack approach, and more.

In this episode of IPv6 Buzz, Ed, Scott, and Tom talk about what employers are looking for when IPv6 shows up in a job posting or as an interview question.

In today's IPv6 Buzz podcast, Ed and Tom speak with Nick Buraglio, a network architect for the Energy Sciences Network (ESnet). We discuss the recent IETF 116 meeting and what's new with IPv6, ULA, IPv6 end site multihoming and its challenges, and more.

In this episode, Ed, Scott, and Tom discuss how hosts OSes such as Windows, Apple, and Android automatically obtain both IPv6 addresses and DNS server information.

Today's IPv6 Buzz podcast explores why you need a plan for IPv6 security. Even if you haven't actively deployed IPv6, you've got v6-enabled hosts on your LAN and remote workers connecting to you over v6 networks. We discuss key elements to consider in your plan, evaluating IPv6 support in security products and services, and more.

On today's IPv6 Buzz podcast we explore the topic of using IPv6 networks to provide IPv4 as a Service (IPv4aaS). Enterprises may become more interested in IPv4aaS as they connect disparate services in their environments. We discuss how IPv4aaS works, and enterprise and service provider use cases.

Today's IPv6 Buzz podcast explore the topic of default address selection with IPv6 hosts as defined in RFC 6724. It's very common for a host to have multiple IPv6 addresses of different types (as well as an IPv4 address in dual-stack environments) and RFC 6724 includes rules for which addresses are used first.

Today's podcast episode revisits the subject of IPv6 address allocation along with how changes in network planning and Regional Internet Registry (RIR) policy are influencing allocation size requests. We also look at how network trends around IoT, cloud, and SD-WAN might affect allocation size and how to overcome "IPv4 thinking."

In today's IPv6 Buzz podcast we discuss IPv6 Neighbor Discovery and some of the operational issues that can happen when configuring and operating IPv6, and what can help listeners understand and resolve those issues.

In today's IPv6 Buzz podcast, Ed, Scott, and Tom speak with Jad El Cham about the RIPE NCC IPv6 training program as well as RIPE NCC's role as the European and Middle Eastern Regional Internet Registry providing Internet resources including IPv6 addresses.

The IPv6 Buzz podcast talks with Richard Hicks about Microsoft's OS changes and use cases for IPv6. Richard is a technology consultant and author. We discuss which Microsoft solutions use IPv6, what its v6 strategy changed, and more.

In today's IPv6 Buzz episode, Ed, Scott, and Tom talk about the good, bad, and ugly of vendor support for IPv6-only. While some vendors support dual-stack deployments, things get a little more precarious when you want to turn off IPv4 entirely.

In this episode, Ed, Scott, and Tom talk about DNS and IPv6. We cover legacy IPv6 brokeness and DNS, how DNS performs over v6, and how DNS works with v6-only networks.

Today's IPv6 Buzz episode answers listener questions about Duplicate Address Detection (DAD) and auto-addressing, privacy and IPv6, and where NAT46 fits in.

In this episode of IPv6 Buzz, Ed, Scott, and Tom talk about our DAD issues — well, our IPv6 Duplicate Address Detection (DAD) issues anyway. DAD is a feature of IPv6 that looks for duplicate IP addresses among hosts on the same segment. We discuss how it works and operational considerations.

In this episode of IPv6 Buzz, Ed, Scott, and Tom speak with XiPeng Xiao, the new chair of the IETF v6ops working group. We discuss the lastest work in IPv6 at the IETF, whether the IETF should have a role in promoting v6 in the enterprise, and more.

What's the state of IPv6 in the public cloud? What support is available in which of the major providers? What are the cloud challenges of v6? How does v6 affect multi-cloud architectures? The latest episode of the IPv6 Buzz podcast examines these and other v6 questions for public cloud.

On today's IPv6 Buzz podcast we explore DHCPv6 Option 108. Option 108 basically allows a DHCP server to use IPv4 to contact a host and tell that host to disable its IPv4 stack and switch to IPv6-only. In other words, you're using IPv4 to turn off IPv4. We examine the use cases for this peculiar capability.

In this episode of the IPv6 Buzz podcast, Ed, Scott, and Tom talk about microsegmentation with IPv6 and what the IT use cases look like.

In this IPv6 Buzz episode, we with George Michaelson of APNIC about IPv6 in the Asia Pacific region (and beyond). Topics include how mobile drives IPv6, regional variations in adoption, and what's going on with IPv6 in China.

In this episode, Ed and Tom talk with Nick Buraglio about ongoing efforts within the IETF to improve ULA. Nick is co-author of the IETF draft "Unintended Operational Issues With ULA" and recently presented at IETF 114 in Philadelphia.

In this IPv6 Buzz podcast episode Ed, Scott, and Tom--with tongues firmly in cheek---discuss some of the ways to avoid or put off IPv6 adoption until you can retire.

In this episode, the IPv6 Buzz crew talk about IPv6 transition technologies – especially NAT64/DNS64 – and what design considerations come into play when deploying them.

In this IPv6 Buzz episode we talk about the benefit of IPv6 connectivity when IPv4 fails. We examine the types of IPv4 failures, how IPv6 behaves during IPv4 failure, application dependencies, and more.