Macworld Forums: IPv6 doomsday won't hit in 2012, experts say - Macworld Forums

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In case anyone hasn't noticed yet, both OS X and iOS already support IPv6. In OS X, you can see the IPv6 setting in System Preferences -> Network -> Advanced...

iOS presumably generates a device-specific IPv6 address from either the device's MAC address or by using some kind of randomization (to mask your device's MAC address.) And AirPort base stations all can be configured for IPv6.

It's not the OS compatibility, but the hardware and switches for the backbones that it holding things up. ISPs and backbone providers who have to replace equipment 'round the country, continent and world. Takes time and $$$, which will translate into increased costs for consumers. I wouldn't want my ISP to upgrade their entire network to IPv6 is my bill doubled! Look at how long its taking phone providers to roll out 4G and you have an idea of the problem scope.

"most enterprises didn’t begin upgrading to IPv6 last year"

Meanwhile, Comcast is aggressively switching over to IPv6.

http://www.comcast6.net/

Craig is getting on the meat of the issue. Most backbone routers and switches are done by the main seller of the routers & switches of the "enterprise" space. Now this company regularly puts out OS updates all the time but IPv6 compatible equipment updates must be new routers & switches. These things are really expensive and the right now in the super down economy "businesses" are cutting back the purchase of replacing all those working pieces of equipment to comply with IPv6.