IPv4 Markets

Exactly When Is ARIN Going to Run Out of IPv4 Addresses?

At the April 2013 ARIN meeting the inevitable question came up once more: "Exactly when is ARIN going to run out of IPv4 addresses?" Various dates have been proposed as an answer to this question, based on various methods of prediction. As the date is indeed getting closer, it may well be worth the time to review ARIN's situation, and make a few predictions here about the likely date when ARIN's exhausts its remaining pool of IPv4 addresses. more

CircleID’s Top 10 Posts of 2009

Looking back at the year that just ended, here are the top ten most popular news, blogs, and industry news on CircleID in 2009 based on the overall readership of the posts. Congratulations to all the participants whose posts reached top readership in 2009 and best wishes to the entire community in 2010. more

Blacklisting Under Wrong Assumptions

If you analyze the relay of spam- and malware-containing email circulating on the Internet purely through your mail server logs (running the Unix command "tail"), a large proportion seem to come from Asia Pacific hosts, especially those from mainland China. Therefore, many less-experienced systems administrators have simply blocked the access from subnets of Chinese or Asian origin, effectively destroying the fabric of the Internet -- messaging. If administrators took pains to analyze these supposedly Asian spam messages by analyzing the full Internet headers, they would have realized that the Asian servers were merely used by the real spammers as open relays, or perhaps as zombie hosts previously infected with the mass mailing worms through the exploitation of operating system vulnerabilities.  more

CircleID’s Top Ten Posts of 2012

Here are the top ten most popular news, blogs, and industry updates featured on CircleID during 2012 based on the overall readership of the posts for the past 12 months. Congratulations to all the participants whose posts reached top readership and best wishes to the entire community for 2013. more

IPv6 and Transitional Myths

I attended the RIPE 61 meeting this month, and, not unexpectedly for a group that has some interest in IP addresses, the topic of IPv4 address exhaustion, and the related topic of the transition of the network to IPv6 has captured a lot of attention throughout the meeting. One session I found particularly interesting was one on the transition to IPv6, where folk related their experiences and perspectives on the forthcoming transition to IPv6. I found the session interesting, as it exposed some commonly held beliefs about the transition to IPv6, so I'd like to share them here, and discuss a little about why I find them somewhat fanciful. more

How a Routing Prefix Travels Through the Internet

What happens when an IP address prefix gets announced or withdrawn. How does this information propagate through the Internet? And how does it affect the amount of Border Gateway Protocol (BGP) traffic across the Internet when a single prefix is freshly announced or withdrawn from the global routing table? The following short analysis shows the detailed effects of these two events. more

An Update on IPv6

In the coming weeks another Regional Internet Registry will reach into its inventory of available IPv4 addresses to hand out and it will find that there is nothing left. This is by no means a surprise, and the depletion of IPv4 addresses in the Internet could be seen as one of the longest slow motion train wrecks in history. The IANA exhausted its remaining pool of unallocated IPv4 addresses over four years ago in early 2011, and since then we've seen the exhaustion of the address pools in the Asia Pacific region in April 2011, in the European and the Middle Eastern region in September 2012, in Latin America and the Caribbean in May 2014 and now it's ARIN's turn... more

Using Domain Filtering To Effect IP Address Filtering

In Taking Back The DNS I described new technology in ISC BIND as of Version 9.8.0 that allows a recursive server operator to import DNS filtering rules in what ISC hopes will become the standard interchange format for DNS policy information. Later I had to decry the possible use of this technology for mandated content blocking such as might soon be the law of the land in my country. I'm a guest at MAAWG this week in San Francisco and one of the most useful hallway discussions I've been in so far was about the Spamhaus DROP list. more

When will we run out of IPv4?

A paper by Tony Hain was recently published in the Internet Protocol Journal which sparked a debate on Slashdot. Particularly, Tony's paper suggested that IANA will run out of IP addresses in 5 years or less. However, there is another paper written by Geoff Hutson which projects that we have enough IPv4 address until 2022. The differences got most people confused. So who is right? more

URLs, IP Numbers, and Speech

There's a great fight going on right now in Philadelphia...The case is about a Pennsylvania statute [PDF] that mandates that Pennsylvania ISPs remove access to sites that the AG believes contain child pornography. Now, child pornography is abhorrent and any ISP will cooperate in taking down such sites that it is hosting. But the problem is that in complying with the statute with respect to sites the ISPs don't themselves host, ISPs are (rationally) using either IP blocking ("null routing") or "domain poisoning" techniques, both of which (particularly the IP number blocking) result in rendering inaccessible millions of perfectly legal sites. more

CircleID’s Top 10 Posts of 2013

Here we are with CircleID's annual roundup of top ten most popular posts featured during 2013 (based on overall readership). Congratulations to all the participants whose posts reached top readership and best wishes to the entire community for 2014. more

A Primer on IPv4, IPv6 and Transition

There is something badly broken in today's Internet. At first blush that may sound like a contradiction in terms. After all, the Internet is a modern day technical marvel. In just a couple of decades the Internet has not only transformed the global communications sector, but its reach has extended far further into our society, and it has fundamentally changed the way we do business, the nature of entertainment, the way we buy and sell, and even the structures of government and their engagement with citizens. In many ways the Internet has had a transformative effect on our society that is similar in scale and scope to that of the industrial revolution in the 19th century. How could it possibly be that this prodigious technology of the Internet is "badly broken?" more

Technology Adoption in the Internet

How are new technologies adopted in the Internet? What drives adoption? What impedes adoption? These were the questions posed at a panel session at the recent EuroDiG workshop in June. In many ways, this is an uncomfortable question for the Internet, given the Internet's uncontrolled runaway success in its first two decades. The IPv4 Internet was deployed about as quickly as capital, expertise, and resources could be bought to bear on the problem... more

OECD Reports on State of IPv6 Deployment for Policy Makers

OECD, Organization for Economic Co-Operation and Development, has released a report for policy makers assessing the level of IPv6 deployment around the world. "[T]he timely deployment of IPv6 by network operators and content/application providers is an increasing priority for all Internet stakeholders. In terms of public policy, IPv6 plays an important role in enabling growth of the Internet to support further innovation. In addition, security, interoperability and competition issues are involved with the depletion of IPv4." more

Root Scaling Study Report is Out

Earlier this year, ICANN began to seriously consider the various effects of adding DNS protocol features and new entries into the Root Zone. With the NTIA announcement that the Root Zone would be signed this year, a root scaling study team was formed to assess the scalability of the processes used to create and publish the Root Zone. Properly considered, this study should have lasted longer than the 120 days -- but the results suggest that scaling up the root zone is not without risk -- and these risks should be considered before "green-lighting" any significant changes to the root zone or its processes. I, for one, would be interested in any comments, observations, etc. (The caveats: This was, by most measures, a rush job. My spin: This is or should be a risk assessment tool.) Full report available here [PDF]. more