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[ga] "...IPv6 is NOT a new protocol, it is only a new version of the IP protocol..."


From: "Francis Dupont" <Francis.Dupont@enst-bretagne.fr>
"...IPv6 is NOT a new protocol, it is only a new version of the IP protocol..."

How come the IPv4 Header has 160-bits and the IPv6 Header has 320-bits ?

Is VHS the same as BETAmax ?

Mars is not a new planet, it is just a suburb of planet Earth...
http://www.ActiveWorlds.com


Jim Fleming
2002:[IPv4]:000X:03DB:...IPv8 is closer than you think...
http://www.iana.org/assignments/ipv4-address-space
http://www.ntia.doc.gov/ntiahome/domainname/130dftmail/unir.txt


----- Original Message ----- 
From: "Francis Dupont" <Francis.Dupont@enst-bretagne.fr>
To: <itojun@iijlab.net>
Cc: <ipng@sunroof.eng.sun.com>
Sent: Friday, August 30, 2002 6:10 AM
Subject: Re: another input to IPv6 addressing architecture 


> In your previous mail you wrote:
> 
>    4.  Suggested protocol change
>    
>    o In IPv4 address architecture document [Hinden, 1998] explicitly state
>      that IPv4 mapped address is for use within basic API [Gilligan, 1999]
>      , and basic API only.  Forbid any other uses.
>    
> => I don't like at all SIIT so I have no concern with this proposal.
> 
>    o Move any document that suggests the use of IPv4 mapped address on wire
>      to historic, due to security reasons.
>    
> => you are a bit hard: these mechanisms should simply use other
> injections of the IPv4 address space into the IPv6 address space
> (there are many ways to inject a 2^32 space into a 2^128 one :-).
> 
>    The above change will remove the threat due to the use of IPv4 mapped
>    address on wire.
>    
> => I agree this should be simpler so safer.
> 
>    Another way is to deprecate RFC2553 section 3.7, however, due to the
>    wide deployment of applications that use IPv6 basic API, the option is
>    not feasible.
> 
> => I strongly object to this part of your proposal. IMHO IPv6 is NOT
> a new protocol, it is only a new version of the IP protocol. So the
> right target is to provide an "all version" API, as it is easy to inject
> IPv4 into IPv6, the section 3.7 is the right idea!
> 
> Regards
> 
> Francis.Dupont@enst-bretagne.fr
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