Re: v4 side unmodifiable

[Rémi Denis-Courmont <rdenis@simphalempin.com>]

Le Friday 07 December 2007 03:31:54 Iljitsch van Beijnum, vous avez écrit :
> Jari basically said this ^^
>
> However, although I agree it's true in the general case, I think for
> non-trivial servers/services, this isn't true: if there is a good
> reason to make changes on the IPv4-only side, it may be possible to
> make them.

That would depend on your definition of "non-trivial". But I am afraid Jari is 
right - host still lacking an IPv6 stack are either not upgradeable, or not 
willing to be upgraded.

As someone pointed out already, modifying even existing IPv6-capable host is 
pretty difficult: it would be 15 years or so before the Windows more recent 
than Vista would have a fair share of the market, if it ever happens.

Also worth considering is the self-realizing prophecy factor - if >80% of 
IETFers think that a given IETF technology (say modifying IPv4 stacks to 
support IPv6 transition) won't happen, how likely is it to be successful 
anyway? :(

-- 
Rémi Denis-Courmont