Ars Technica has posted some useful coverage in the last couple of weeks on IPv4 and IPv6. The gist of the news is that we’re running pretty darn low on IPv4 addresses, and IPv6 traffic on the Web is minimal at best.
I freely admit I don’t know all the ins and outs here, but I do know that implementing DOCSIS 3.0 means creating a lot more support for IPv6. Even though IPv6 isn’t one of the top reasons cable operators are moving forward on DOCSIS 3.0, it’s a nice bonus. Timely too.