IP Addressing

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Painting Ourselves Into a Corner with Path MTU Discovery

In Tony Li's article on path MTU discovery we see this text: "The next attempt to solve the MTU problem has been Packetization Layer Path MTU Discovery (PLPMTUD). Rather than depending on ICMP messaging, in this approach, the transport layer depends on packet loss to determine that the packet was too big for the network. Heuristics are used to differentiate between MTU problems and congestion. Obviously, this technique is only practical for protocols where the source can determine that there has been packet loss. Unidirectional, unacknowledged transfers, typically using UDP, would not be able to use this mechanism. To date, PLPMTUD hasn't demonstrated a significant improvement in the situation." Tony's article is (as usual) quite readable and useful, but my specific concern here is DNS... more»

The IETF's *Other* Diversity Challenge

The Internet Engineering Task Force (IETF) is the standards body for the Internet. It is the organization that publishes and maintains the standards describing the Internet Protocol (IP -- versions 4 and 6), and all directly related and supporting protocols, such as TCP, UDP, DNS (and DNSSEC), BGP, DHCP, NDP, the list goes on, and on... But how do they do that? How does the IETF produce documents, and ensure that they are high quality, relevant, and influential? more»

Webinar Tomorrow (May 22) - IPv6 and Telecom: IPv4 is Finally Running Out. Now What?

What is the impact of IPv6 on telecommunications, VoIP, unified communications, etc? Why should telecom operators care about IPv6? What VoIP systems already support IPv6? What efforts are underway within organizations like the IETF and the SIP Forum to ensure that telecommunications can work over IPv6? more»

IP Addresses in Cars, Car Manufacturers as Internet Registries? - Another Need for IPv6 Now!

I recently came across an interesting piece about the use of IP addresses in the Tesla model S. The part that caught my attention and led to this post is that the car uses the private IPv4 address subnet 192.168.90.0/24 to address different nodes e.g. the centre console is 192.168.90.100 and the dashboard/navigation screen is 192.168.90.101. Put your geek hat on for a moment as you ponder that! more»

IANA Transition Set to Disrupt ICANN Operations

The US Government's decision to transition its oversight of the IANA function to a multi-national, multi stakeholder organisation is set to impact ICANN's standard operations. On April 25, ICANN Board Chair Steve Crocker send an email to the ICANN community leaders suggesting changes to the agenda for the upcoming 50th International ICANN meeting, set to be held in London from June 22 to 26. more»

The Importance of IP Resource Planning in Government ICT Strategic Plans

It seems everywhere I turn, there's someone throwing around statistics for how the Internet and broadband will drive economic growth, create jobs, end world hunger and bring world peace (ok, maybe not the later). Sure enough, government officials are buying into that rhetoric and extending it in initiatives like national broadband strategies, cybercrime and cybersecurity plans as well as e-governance strategies. more»

What the US Government Said About IANA in Singapore

Two weeks ago, the US government announced it would transition its role in the IANA functions to the global Internet community. It tasked ICANN with the job of arriving at a transition plan and noted that the current contract runs out in 18 months' time, 30 September 2015. This week, ICANN started that process at its meeting in Singapore. And on the ground were the two key US government officials behind the decision. more»

IANA: The World Loses if the Technical Industry Checks Out

On Friday, 14 March 2014, the U.S. Department of Commerce National Telecommunications and Information Administration (NTIA) announced its intention to transition the IANA functions to the global multistakeholder community. As expected, the announcement has sent adrenaline coursing through the veins of Internet governance experts and government policy people the world over. I'd argue, however, that it is an important point for the Internet's technical experts to sit up and take notice, as well: the fact that you are probably saying "what problem does this solve?" is a testimony to how much works well today, and we want to make sure it continues to work well in any future arrangements. more»

Designing Effective Regulation for IPv6 Adoption

So you are the IT regulator for a country and you are convinced that the shortage of IPv4 address space represents a threat to the development of the Internet in your country and you want to do something about it. Being that as regulator you don't really run the countries IP networks, what can you really do? I've heard many regulators in over 30 countries grapple with this problem. The purpose of this article is to think through some ideas to guide action on using (or not) regulation to drive IPv6 adoption. more»

Addressing 2013 - That Was the Year That Was

Time for another annual roundup from the world of IP addresses. What happened in 2013 and what is likely to happen in 2014? This is an update to the reports prepared at the same time in previous years, so let's see what has changed in the past 12 months in addressing the Internet, and look at how IP address allocation information can inform us of the changing nature of the network itself. more»