Mohacsi Janos wrote:
On Thu, 26 Mar 2009, Mark Smith wrote:I agree with Remi, 6RD isn't a functionally equivalent alternative to 6to4.
The most important difference is that 6RD forcing to the provider to provision their own relay.
Except that it doesn't.This is a little bit of semantics on the surface, but there's a very real point behind it.
Many ISPs don't care about supporting IPv6 yet. If you, as a customer, call their support line to task about it, you basically get something along the lines of, "What's IPv6? Have you rebooted your Windows and your (cable|DSL) modem?"
If ISPs don't care enough to support, or even have an inkling of IPv6, they're also not going to deploy anything like 6RD (though I admit I'm just picking up on the 6RD conversation...but if it requires ISPs to deploy something, its basically dead in the water for a long time still).
There are many people (myself included) that are happily using 6to4, and we're using 6to4 because the ISPs available to us are utterly and completely clueless, so we don't really have any other option. If the 6to4 anycast goes away and you require the ISP to deploy something for the replacement technology, you are effectively cutting us off from the IPv6 Internet for the foreseeable future. The only other option I see is hard to manage and configure, and frequently bandwidth constrained, tunnel brokers.
Oh, and my CPE supports 6to4, but not a tunnel broker sort of setup (at least that I can find...Apple Airport Extreme)
I don't have any problem with 6RD as an additional transition mechanism...I'm not sure its worth the effort, but if people want to go down that path, then that's their choice...but please don't take away 6to4 anycast gateway or I, and several households that I work with, go away from the IPv6 Internet.
Here in .au ADSL routers are owned by the customer, not managed by the ISP, so deploying IPv6 via 6RD is unfortunately not an option.As most of the case in the world. Usually the DSL modem owned by the provider, but not the router. But there are some countries you can own your own DSL modem. In the DOCSIS architecture the cable modem, always owned by the provider, potentially can be made more smart to support 6RD, however most of the user already installed dumb soho router without ipv6 support.Best Regards, Janos Mohacsi
-- Jeff McAdams jeffm@iglou.com