[governance] IPv4-v6 - "coexistence" not transition - operational issues surfacing

[Bertrand de La Chapelle]

Hi,

On 2/21/08, McTim <dogwallah at gmail.com> wrote:

IPv6 packet design HAD to be different from IPv4 packet design, hence,
lack of backwards compatibility.
But Randy Bush's slides say :

"Incompatibility could have been avoided, e.g. if IPv6 had variable length
addressing, IPv4 could have become the 32 bit variant"

Must confess I'm not cognisant enough. Could you explain a bit further ?

Best

Bertrand



On 2/21/08, McTim <dogwallah at gmail.com> wrote:
>
> On Thu, Feb 21, 2008 at 1:44 PM, Bertrand de La Chapelle
> <bdelachapelle at gmail.com> wrote:
> > Hi all,
> >
> >
> >
> > On 2/21/08, McTim <dogwallah at gmail.com> wrote:
> >
> > There won't be A remedy. the 2 protocols were never designed to be
> >  "interoperable".  There are a variety of "remedies" that will allow v4
> > hosts to communicate with v6 hosts and vice versa.
> >
> > Can anyone explain why those who designed IPV6 did not think about the
> > transition path and the necessary interoperability between both
> protocols ?
>
> They did think about the transition path:
>
> http://nislab.bu.edu/sc546/sc441Spring2003/ipv6/transition.htm
>
> in order to "Deploy more recent technologies" listed here:
>
> http://www.netbsd.org/docs/network/ipv6/
>
> IPv6 packet design HAD to be different from IPv4 packet design, hence,
> lack of backwards compatibility.
>
> Don't worry, the sky is not falling, the Internet will not come
> crashing to a halt, as some are suggesting.
>
> --
> Cheers,
>
> McTim
> $ whois -h whois.afrinic.net mctim
>



-- 
____________________
Bertrand de La Chapelle
Délégué Spécial pour la Société de l'Information / Special Envoy for the
Information Society
Ministère des Affaires Etrangères et Européennes/ French Ministry of Foreign
and European Affairs
Tel : +33 (0)6 11 88 33 32

"Le plus beau métier des hommes, c'est d'unir les hommes" Antoine de Saint
Exupéry
("there is no better mission for humans than uniting humans")
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