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Re: [v6ops] About Req for Comments - "Transition to IPv6"

Alexandre Petrescu <alexandre.petrescu@gmail.com> Thu, 05 March 2020 16:51 UTC

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To: Owen DeLong <owen@delong.com>
Cc: v6ops@ietf.org
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From: Alexandre Petrescu <alexandre.petrescu@gmail.com>
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Subject: Re: [v6ops] About Req for Comments - "Transition to IPv6"
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Le 05/03/2020 à 17:46, Owen DeLong a écrit :
> 
> 
>> On Mar 5, 2020, at 6:02 AM, Alexandre Petrescu
>> <alexandre.petrescu@gmail.com> wrote:
>> 
>> Thank you very much for the pointer.  In it I could spot the
>> following footnote: "[4] IPv6-Only refers to network environments
>> in which use of the IPv4 protocol has been eliminated.”
> 
> No.
> 
> IPv6-Only refers to network environments which are not using IPv4.
> That could be a network where IPv4 has been eliminated (rare at this
> time, though Facebook is a significant example) 

Is facebook a network?  I thought of it like a server farm.


or it could be a
> greenfield deployment where IPv4 was never deployed.
> 
>> 
>> In my humble opinion,
>> 
>> I think, if I am not wrong, that there are no such networks in
>> which IPv4 protocol has been eliminated.  On one hand, a network is
>> made of computers, and IPv4 stacks are still present in almost all
>> computers. On another hand, there might be some ptp links (not
>> networks, but individual links) that run IPv6 only.
> 
> You are wrong… There are examples at various levels of IPv6-only
> networks. Many mobile carriers are IPv6-only in the US,

The IPv6-only of mobile carriers in the US - is it carried in IPv4?  The 
last packet dump I saw was IPv6 carried in IPv4.

I stop here thank you.

Alex

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