On Fri, Jun 10, 2011 at 9:18 AM, Noel Chiappa <[email protected]>wrote:
> > Mac OS 10.6.4, which uses 6to4 by default, has a ~50x greater failure > > rate when connecting to dual-stack servers than Mac OS 10.6.5 - and > the > > only change is to not use 6to4 by default. > > ... > > So the existence of 6to4 is in itself a significant barrier for IPv6 > > deployment > > Surely you meant to say "the _incorrect configuration_ of 6to4 is in itself > a > significant barrier"? > You cannot expect something to be configured correctly if it is simply turned on without a) being managed by someone or b) detection mechanisms to see if it's working. Sadly, anycasted 6to4 meets neither of these conditions. > I get the impression that the problem comes in when 6to4 is configured on > by default, and too high in the priority list (as opposed to native, other > methods, etc). So fix the real issue, don't try and prematurely kill off > something that's being used by lots of people. I fundamentally disagree. I really don't think that 6to4 is used by "lots" of people for applications that wouldn't just use (more reliable) IPv4 if 6to4 wasn't there.
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