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Adam Castle — 27 Sep 2013
The Trouble with NAT - Part 2
The Trouble with NAT - Part 2
Mirjam Kühne — 27 Oct 2016

This is the second post in a series on NATs contributed by Mark Smith, based on a presentation given at AusNOG 2016. In the first post, Mark discussed Network Critical Success Factors (NCSFs). In this post, he is going into details about the trouble with Network Address Translation (NAT).… Read more

Tags: ipv4 ipv6 nat
The Trouble with NAT - Part 1
The Trouble with NAT - Part 1
Mirjam Kühne — 27 Oct 2016

This is a guest post by Mark Smith, based on a presentation he gave at the AusNOG 2016 conference on this topic. This is the first post of three, and in this article Mark will discuss the concept of Network Critical Success Factors (NCSFs) before getting into ‘the trouble’.… Read more

Tags: ipv4 ipv6 nat
IPv6 and the DNS
IPv6 and the DNS
Geoff Huston — 20 Oct 2016

The exhortations about the Internet’s prolonged transition to version 6 of the Internet Protocol continue, although after some two decades the intensity of the rhetoric has faded and, possibly surprisingly, it has been replaced by action in some notable parts of the Internet. But how do we know there is action? How can we tell whether, and where, IPv6 is being deployed in today’s Internet?… Read more

Can You Make IPv6 Work Commercially?
Can You Make IPv6 Work Commercially?
Marco Hogewoning — 07 Jul 2016

Large scale IPv6 deployments suggest that IPv6 is at least a technical success - the technology works. Now it's time to visit the other important question: does it work commercially? Does IPv6 really come with a positive business case? We are about to find out, if you help us... (for instance by filling in the poll next to the article)… Read more

Tags: ipv6
Scaling the Internet of Things? Not a Problem!
Scaling the Internet of Things? Not a Problem!
Shane Kerr — 30 Jun 2016

What makes the Internet of Things (IoT) different from the Internet as we know it? Today's Internet connects people, while the Internet of Things connects... things. What are these things? In the case of IoT, it means embedded computer chips that are attached to some physical device with networking capability.… Read more

Tags: BGP IoT dns ipv6
How are you Deploying IPv6? Take this Survey
Jordi Palet Martinez — 31 May 2016

After 15 years conducting training on IPv6 in over 110 countries, I’ve been asked all sorts of questions. “How do I use my IPv6 addressing space?” “What prefix size should I provide to customers?” Although I have answers to these and many other best practice related questions, the one question, which I have not been able to answer to the best of my ability, is “What is the approach of other ISPs?”. So I decided to find out.… Read more

Tags: ipv6
Fragmenting IPv6
Geoff Huston — 19 May 2016

The design of IPv6 represented a relatively conservative evolutionary step of the Internet protocol. Mostly, it's just IPv4 with significantly larger address fields. Mostly, but not completely, as there were some changes. IPv6 changed the boot process to use auto-configuration and multicast to perform functions that were performed by ARP and DHCP in IPv4. IPv6 added a 20-bit Flow Identifier to the packet header. IPv6 replaced IP header options with an optional chain of extension headers. IPv6 also changed the behaviour of packet fragmentation. Which is what we will look at here.… Read more

Tags: ipv6
The Internet for Things
The Internet for Things
Mirjam Kühne — 10 May 2016

Please read this guest post by Byron Ellacott, Senior Software Architect at APNIC: The Internet of Things without the Internet is just things, and we’ve had things since the first caveman used a pointy stick to draw on a wall. What then does the Internet bring to things to justify a capital T?… Read more

RIPE Atlas Update: DNSMON Code Available, LatencyMON Comparisons, New Credit Sharing and More
RIPE Atlas Update: DNSMON Code Available, LatencyMON Comparisons, New Credit Sharing and More
Suzanne Taylor — 30 Mar 2016

In the past few months, we've added some new features and functionality to RIPE Atlas, including making the DNSMON code available on GitHub for personal use, displaying IPv4 vs IPv6 comparisons in LatencyMON, new credit sharing options, and new limits on probes per measurement and results per day. Learn more about the latest updates - and don't forget to tell us what you think.… Read more

10,000 LIRs with IPv6 Resources
10,000 LIRs with IPv6 Resources
Nathalie Nathalie — 29 Feb 2016

This week, the RIPE NCC saw a milestone as the 10,000th Local Internet Registry (LIR) received IPv6 addresses. The first block of IPv6 addresses was allocated from IANA to the RIPE NCC in 1999, so we have been distributing IPv6 addresses for 17 years. In those years we have seen interesting policy developments, making it easier for LIRs to obtain enough IPv6 to satisfy their needs. In this article we track the policy developments that have made it progressively easier for LIRs to get the IPv6 they need.… Read more

Tags: lirs policy ipv6
On the Internet, Everyone is Connected to Everyone Else. Right?
On the Internet, Everyone is Connected to Everyone Else. Right?
Geoff Huston — 22 Feb 2016

We tend to make a number of assumptions about the Internet, and sometimes these assumptions don’t always stand up to critical analysis. We were perhaps ‘trained’ by the claims of the telephone service to believe that these communications networks supported a model of universal connectivity. Any telephone handset could establish a call with any other telephone handset was the underlying model of a ubiquitous telephone service, and we’ve carried that assumption into our perception of the Internet. On the Internet anyone can communicate with anyone else – right?… Read more

Evaluating IPv4 and IPv6 Packet Fragmentation
Evaluating IPv4 and IPv6 Packet Fragmentation
Geoff Huston — 29 Jan 2016

One of the more difficult design exercises in packet-switched network architectures is that of the design of packet fragmentation. In this article, I’d like to examine IP packet fragmentation in detail and look at the design choices made by IP version 4, and then compare that with the design choices made by IP version 6.… Read more

Tags: ipv4 ipv6
Christmas Gift Idea: Some IPv6 Experience
Christmas Gift Idea: Some IPv6 Experience
Marco Hogewoning — 14 Dec 2015

The holiday season is rapidly approaching and this year is coming to a close, another one done and another one that seen some great and wonderful and also unfortunately some sad moments. One of those key moments was the depletion of the IPv4 pool in the ARIN region, which for some probably means the sad realisation that their business models will hit a growth barrier.… Read more

Tags: policy ipv6

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