Alun Davies

Six on IPv6

Alun Davies
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This Sunday marks nine years since the World IPv6 Launch took place, an event coordinated by ISOC. To celebrate, to reminisce, to look back at how we thought and felt about IPv6 over the years, here are six RIPE Labs articles championing adoption, flagging blockers, quashing misconceptions, evaluating quirks and, all in all, measuring and mapping IPv6 deployment.

Since World IPv6 Launch back on 6 June 2012, there has been a gradual - sometimes too gradual, but always inevitable - expansion of the deployment of IPv6 all across the world. As we continue to watch carefully - keeping a keen eye on a variety of datasets available from ISOC, Google, Facebook, Cisco, APNIC, etc. - the overall picture remains a positive one.

In the run up to Sunday, we'll look more at what we've seen from those datasets lately, and we'll also be looking at how we continue to provide important advice and training around the changes that come with IPv6 adoption. So watch this space. But for now, as a warmer-upper, here's six of the top articles from recent years delving into different aspects of the IPv6 story so far.

IPv6 Security - An Overview


The advent of IPv6 brought with it new security challenges in the form of new types of attacks, or at least variations of the attacks previously know from the age of IPv4. In this article from 2013, Johannes Weber produced an overview of the IPv6 security vulnerabilities that arose with the launch of IPv6.

Sending and Receiving Emails Over IPv6


The change to IPv6 created new challenges to keep spam out of email. Because of the sheer size of the IPv6 space, it seemed more efficient to build a domain-blocking and reputation system rather than an IP-blocking system. In this article from 2014, Mirjam Kühne investigated whether it was possible to ensure that emails over IPv6 have an authenticated domain.

Examining IPv6 Performance

Geoff Houston takes on the claim that services weren't supporting IPv6 because operators were of the opinion that IPv6 offers inferior quality of service. This article takes a close look at whether this was really the case.


IPv6 Misconceptions - It's Fake News


A few years back, Jen Linkova wrote on RIPE Labs in order to take on a set of common misconceptions that were, and likely still are, being used as reasons for not deploying IPv6. The first article and its follow up are still very relevant to discussion about IPv6 adoption.

What's the Deal with Link-Local IPv6 Addresses?


The switch to IPv6 introduces interesting quirks. In this article written from the perspective of a RIPE Atlas system programmer, Philip Homburg looks at how link-local addresses in IPv6, and specifically the '%eth0'-part of link-local addresses, can have an interesting impact on RIPE Atlas measurements.

IPv6 Adoption Statistics - A Comparison of Different Metrics

Finally, in this useful article, Rene Wilhelm takes a look at IPv6 adoption statistics provided by various organisations to ask how to what extent they, and when they don't, why not?


If you liked what you've seen here, and would like to see what else is on offer on RIPE Labs, there are 200+ articles focusing on IPv6 to go at. Browse through all of them, or narrow your search down to get right to the heart of the IPv6-related issues that matter most to you. Happy reading!

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About the author

Alun Davies Based in Amsterdam

Hailing from a research background in philosophy, linguistics and computer science, I came to the RIPE NCC back in 2016 and took on the role of RIPE Labs Editor in 2020.

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