"IP-V6 penetrationAdded half a percent of the Internet's users each year over the past two decades." Iljitsch van Beijnum has captured the status in a great headline. There is no unifying force that implements Internet rules. Each of the network of networks takes its time. 

While the world average is about 10%, Google's data finds the U.S. at 25%. 

Van Beijnum sees the primary holdback, "We need to upgrade all servers, all clients, all routers, all firewalls, all load balancers, and all management systems to IPv6 before we can retire IPv4 and thus free ourselves of its limitations.... So even though all our operating systems and nearly all network equipment supports IPv6 today (and has for many years in most cases), as long as there's just one device along the way that doesn't understand the new protocol—or its administrator hasn't gotten around to enabling it—we have to keep using IPv4

Leslie Daigle, Former Chief Internet Technology Officer for the Internet Society, says this lack of compatibility with the current IPv4 protocol was the single critical failure. Vint Cerf emailed me related thoughts:

"No matter what, any change to the IPv4 format would have required changes to ALL router and host software. Every router and host would have to change to recognize the new IPv6 format in addition to the older IPv4 format. At that point, dual-stack seemed like the most economic way to do the implementation. Assuming the larger address format was the ultimate destination, creating some mixed IPv4/IPv6 format packet would have been more complex than just having the two distinct formats and would still have forced every router and host to change.

"Everyone had IPv4 so if you did a DNS lookup and got back only IPv4 you could use existing code. If you got back IPv6 only, you would have to use IPv6 code or not open the connection. If you got back both address types, then you needed to have a preference for one or the other.None of this was a trivial change. It was once proposed to use variable length addressing but the host and router programmers didn't like having to parse packets to find field boundaries." 

Others point to the cost because routers need upgrading or replacing. 

Vint Cerf accepts, “It’s my fault,” for choosing 32 bits and allowing only 4.3B addresses. Looking back, Vint adds, “It’s enough to do an experiment.The problem is the experiment never ended.” In 2015, Vint pointed out, "The next wave of stuff is the Internet of Things. Every appliance you can possibly imagine, you're shifting from electromechanical controls to programmable controls. And once you put a computer inside of anything, there's an opportunity to put it on the Net."

With hindsight, Vint says, "Who the hell knew how much address space we needed?" 

Surprising thing in the Google data: U.S. at 25% converted is far ahead of almost everyone. I had guessed we would not be moving so quickly because so many institutions in the U.S. still had addresses.
It may be the reason for the U.S. response is that ISOC is based here and understands U.S. requirements particularly well. 



Often interesting


Mobile World Congress, Barcelona, Feb 27-March 2 100,000 mob Barcelona. Fares from New York are triple the usual price and hotels even higher - if you can find one less than a hour from the city. Everybody who is anybody goes so everybody who is anybody goes. Beyond the pomp and hot air are a slew of top technical people. Seek them out and make sure yo make appointments in advance with the people you want to see. Hint: You can still get rooms at the hostels in town. Next year, book way in advance to get one of the hotel rooms GSMA have negotiated with the city.

Digital Hollywood Media Summit, New York March 7-8. Victor Harwood always had an enormous number of top people in an almost overcrowded schedule. Senior folks from advertising, all media, marketing and more. VR and AR are heavily represented, from the talent to the salesmen. The price is about half what most shows charge and there are discounts for those with limited resources, including students.  A great way to learn what the most advanced in these fields are doing.

Brooklyn 5G Summit April 19-21st The most sophisticated people in wireless will be there, from the CTOs of NTT and Nokia to the most respected academics on the planet. Incredible S/N. If you can't come to Brooklyn, you must watch the stream. It takes two or three years for most people to catch up to what's learned here.

G.fast Summit, Paris May 9-11 Trevor Linney of BT is deploying 10M lines. John Cioffi promises something astonishing. Everyone in the industry will be there except Broadcom, being their usual antisocial self. On the 9th, Hubert Mariotte of the standards committee has a deep technical tutorial and I have a session for everyone else.

TNO Ultrabroadband Den Haag June 12-15 Always a strong group.

I'm moving from fastnetnews.com to fastnet.news everything since July 2014 is here.


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