Quick IPv6 Update

Terry Slattery
Principal Architect

As Greg Ferro says, IPv6 is the gift that keeps on giving.

Perhaps you’ve seen the news: Microsoft spends $7.5m on net addresses. Why would Microsoft offer to buy 666,624 IPv4 addresses at a price of $11.25 each? Does it mean that they don’t believe in IPv6? Do they need additional address space? Or is another purpose driving it? I’m not going to comment on other purposes, which could take us down all sorts of speculative paths. If they need more address space, why not use IPv6 addresses? Maybe they are not yet seeing very many IPv6 customers attempting to access their systems via IPv6. It will be interesting to see what Microsoft does with those addresses.

While doing some other research on IPv6, I found an interesting page that describes the types of problems that could affect customers, along with solutions to the problems. It is at the ARIN IPv6 Wiki: Customer problems that could occur. It is a very useful list for anyone considering a switch to IPv6, either as a customer or as an enterprise or carrier.

Another interesting article is about Germany’s heise Online, which ran their own Big IPv6 Experiment. They did their own IPv6 experiment by switching to v6 for a day, then later permanently enabling IPv6. The biggest set of systems with bugs tends to be old Mac OS X systems, which want to use an IPv6 address even if there’s no IPv6 connectivity. What is really interesting is the negative economic impact to their business – end customers with the bugs that they list can’t access their IPv4 web site. They eventually decided that the number of customers with problems was small enough that they should go ahead and leave the IPv6 site running.

The results of the upcoming “World IPv6 Day” will be very interesting to track. On this day, 8 June 2011, a bunch of major internet sites (Google, Facebook, Yahoo!, Akamai and Limelight Networks), will enable IPv6 for 24 hours – a real test of IPv6. (Infoblox will be participating in it too–look for an announcement April 18.) What will be most interesting is how many of their customers will be unable to access their IPv4 web sites because IPv6 connectivity doesn’t exist (i.e. how many customers still have equipment running old software).



Re-posted with Permission 

NetCraftsmen would like to acknowledge Infoblox for their permission to re-post this article which originally appeared in the Applied Infrastructure blog under http://www.infoblox.com/en/communities/blogs.html


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Nick Kelly

Cybersecurity Engineer, Cisco

Nick has over 20 years of experience in Security Operations and Security Sales. He is an avid student of cybersecurity and regularly engages with the Infosec community at events like BSides, RVASec, Derbycon and more. The son of an FBI forensics director, Nick holds a B.S. in Criminal Justice and is one of Cisco’s Fire Jumper Elite members. When he’s not working, he writes cyberpunk and punches aliens on his Playstation.


Virgilio “BONG” dela Cruz Jr.

CCDP, CCNA V, CCNP, Cisco IPS Express Security for AM/EE
Field Solutions Architect, Tech Data

Virgilio “Bong” has sixteen years of professional experience in IT industry from academe, technical and customer support, pre-sales, post sales, project management, training and enablement. He has worked in Cisco Technical Assistance Center (TAC) as a member of the WAN and LAN Switching team. Bong now works for Tech Data as the Field Solutions Architect with a focus on Cisco Security and holds a few Cisco certifications including Fire Jumper Elite.


John Cavanaugh

CCIE #1066, CCDE #20070002, CCAr
Chief Technology Officer, Practice Lead Security Services, NetCraftsmen

John is our CTO and the practice lead for a talented team of consultants focused on designing and delivering scalable and secure infrastructure solutions to customers across multiple industry verticals and technologies. Previously he has held several positions including Executive Director/Chief Architect for Global Network Services at JPMorgan Chase. In that capacity, he led a team managing network architecture and services.  Prior to his role at JPMorgan Chase, John was a Distinguished Engineer at Cisco working across a number of verticals including Higher Education, Finance, Retail, Government, and Health Care.

He is an expert in working with groups to identify business needs, and align technology strategies to enable business strategies, building in agility and scalability to allow for future changes. John is experienced in the architecture and design of highly available, secure, network infrastructure and data centers, and has worked on projects worldwide. He has worked in both the business and regulatory environments for the design and deployment of complex IT infrastructures.