On Sun, Jul 17, 2011 at 6:59 AM, Doug Barton <dougb(_at_)dougbarton(_dot_)us>
On 07/16/2011 07:02, John C Klensin wrote:
--On Friday, July 15, 2011 15:39 -0700 Doug Barton
But, while some people have argued that 6to4 has caused so much
damage by being misconfigured that it should, presumably as
punishment or to create a public example, be eliminated entirely
as an option
My perspective, which I've described at length many times now, is not
that 6to4 needs to be punished, but that the widespread deployment of
IPv6 is being harmed as a result of the negative user experience that it
creates for the majority of its users (particularly the unintentional
ones) and therefore the network as a whole is better off if it goes away.
That do sum it up pretty good.
Furthermore you have the huge problem that neither end of the 6to4
equation has *any* motivation to fix it. The ISP side can simply block
tunnels (or even simpler, ignore the problem). The content side can
simply not deploy AAAA records.
My wild guess is that the ISP will sooner or later stop routing the entire
2002::/16 block... and _yes_ that will hurt bad but it will force a hard error
on the whole 6to4 issue. It's so much better with one hard error than lots
of possible errors.
But I don't recall seeing the sort of venom
that is directed toward 6to4 being focused on them. Perhaps
there weren't enough complaints or you have solid data that 6to4
has caused even more damage.
Once again repeating myself ... I have no venom towards 6to4. This isn't
a personal attack. And yes, various people and organizations that have
vested interests in seeing IPv6 deployed have posted the data about why
6to4 causes way more problems than it solves, and I believe them.
I dare to say the content providers want 6to4 gone because it _can_ be
pointed at as a risk when enabling IPv6.
And I do think the ISP see this as a quite black/white problem _if_ they
have to deal with it. Either 6to4 are on and working all the time without
them doing much, or it's gone.
And this will be my last post on the subject at all, see no point in using more
time on it. Lets move on :)
Roger Jorgensen |
rogerj(_at_)gmail(_dot_)com | - IPv6 is The Key!
http://www.jorgensen.no ; | roger(_at_)jorgensen(_dot_)no
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