IPv6 Buzz

IPv6-mostly is a foothold to get from your dual-stack network to a much more predominantly IPv6-run network, but the reality is that IPv6-mostly has a whole set of dependencies about the fact that IPv4 exists on the network. Ed, Nick and Tom discuss the realities of IPv6-mostly networks such as DHCP and SLAAC configurations, VPN ... Read more »

Ed and Nick explore why developers and SREs often become the bottleneck when transitioning to IPv6-only environments. They share practical strategies for bridging the communication gap between network and application teams, including early collaboration, data-driven monitoring, and fostering open dialogue. Episode Links: Watch this episode on YouTube

Traditional IPAM and DDI tools struggle to handle IPv6 at scale because they were originally designed around IPv4. Today Ed and Tom examine the visibility challenges posed by SLAAC addresses, broken DNS integrations, and massive prefix allocations. They also share potential solutions and strategies for enterprise IPv6 deployment. AdSpot Sponsor: Megaport If you’re supporting cloud ... Read more »

Is your current network monitoring infrastructure capable of seeing IPv6 traffic or are you flying blind in a dual-stack environment? Today Ed, Nick, and Tom explore the critical challenges surrounding IPv6 visibility such as the limitations of vendor tools and the complexities of maintaining observability as networks evolve.

Nick Burgalio and Tom Coffeen discuss a Reddit post that had what appeared to be new federal guidance on IPv6 adoption. While it seems the timelines and guidelines haven’t changed, the post raises questions about the effectiveness of mandates in driving IPv6 adoption. They posit that enabling IPv6 is not just a technical requirement but ... Read more »

Franck Martin returns to the show to discuss the practical challenges of retiring IPv4 with hosts Ed, Nick, and Tom. Together they break down key strategies, how to work effectively with vendors, and how to mitigate potential outages during the transition. They also explore the cultural shifts necessary for successful IPv6 adoption and the importance ... Read more »

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. Andrew explains how recent RFC compliance and UDP checksum fixes help resolve connectivity issues and how the new eBPF CLAT support arriving in NetworkManager promises ... Read more »

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. Episode Links: “Fanboy” series – IPv6 and NATs – YouTube

You can learn a lot about IPv6 from books, videos, and podcasts (such as this one), but it’s hard to beat hands-on experience. John Osmon joins our hosts to discuss how to set up your own IPv6 environment. They cover what John has done, including low-cost home lab options, how it’s impacted his thinking, and ... Read more »

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. Episode Links: IPv6 Prefix Assignment to End-Sites – ... Read more »

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 ... Read more »

Tom Coffeen and Nick Buraglio welcome Chris Cummings to talk about developing code for IPv6. Chris 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 ... Read more »

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.

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 ... Read more »

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. That design principle wasn’t achieved with IPv4 for a variety of reasons (including address scarcity, and many network owners not wanting endpoints ... Read more »

If you’re looking for a network automation project but you’re worried about breaking stuff, why not build your automation adventure around IPv6? If your production traffic runs on IPv4, you can experiment with automated configurations and changes using IPv6 without negatively impacting that v4 traffic. You can get a two-for one experience learning both IPv6 ... Read more »

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. Episode Links: IPv6-to-IPv6 Network ... Read more »

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 ... Read more »

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, ... Read more »

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 ... Read more »