John, Thank you for writing this down, this will help start the discussion. One of the things that is missing IMHO is that there is no clear vision of what the IPv6 Internet will/should looks like. Let me focus on the residential broadband for a minute, I'm fully aware there are other cases, but let's start somewhere. 1) What is the IPv6 'service'? For example, is it reasonable to define a 'basic' level service as web+mail and an 'extended' service as everything else? Random ideas include for example offering a lower cost 'basic' service with v6 that would be 'proxied' to the rest of the v4 Internet.... 2) What is the connectivity model in IPv6 for the residential customer? 1 address versus prefix delegation? what prefix size? is this prefix 'stable' or 'variable' over time? (ie renumbering is expected) (note: the answer to this question has huge implications) What types of devices are connected? PCs or appliances or sensors? What is the management model in the home? (how much all of this has to be controlable by the user vs made automatic?) Are there 'servers' (ie things that answers connections from the outside) in the home? Is there any kind of DNS delegation happening to the home? 3) What is the security model of all this? I just listened today half mistified to a presentation at IETF that was saying that the 'recommended' deployment model in the home is to put a NAT-like stateful firewall in the home gateway... This would mean that IPv6 would have to inherit all the NAT-traversal technologies from IPv4 to work... Is this really what we want? 4) What about the 'legacy' devices that cannot upgrade to IPv6? What kind of service is expected for those? Does defining an 80% type solution as in 1) take care of them? IMHO, until there is a better understanding of the answers to those questions (and many more I'm sure) to describe what the brave new world of IPv6 looks like, it will be difficult to define any Internet scale transition plan... My $.02 - Alain.
-----Original Message----- From: owner-nanog@merit.edu [mailto:owner-nanog@merit.edu] On Behalf Of John Curran Sent: Monday, July 23, 2007 11:56 PM To: nanog Subject: An Internet IPv6 Transition Plan
Folks -
There's quite a few IPv6 transition technologies, each with its own camp of supporters based on particular world view of the hardest & easiest system elements to change. One of the challenges this poses is that it's very easy to get caught up in the various transition approaches and miss the high-level view of what needs to be accomplished.
In an effort to communicate one possible transition plan in a technology agnostic manner, I've written an Internet draft which highlights the expectations that organizations could face over the next few years:
http://www.ietf.org/internet-drafts/draft-jcurran-v6transition plan-00.txt
I'd be interested in hearing any and all feedback from the NANOG community on this draft; feel free to send such privately if you'd prefer a degree of anonymity, or have the urge to use language inappropriate in public... ;-)
Thanks! /John