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Re: [v6ops] The meaning of "IPv6-only" -- Re: sense of draft-vf-v6ops-ipv6-deployment

Mark Andrews <marka@isc.org> Tue, 30 March 2021 22:46 UTC

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From: Mark Andrews <marka@isc.org>
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Date: Wed, 31 Mar 2021 09:45:51 +1100
Cc: Gabor LENCSE <lencse@hit.bme.hu>, v6ops@ietf.org
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To: Brian E Carpenter <brian.e.carpenter@gmail.com>
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Subject: Re: [v6ops] The meaning of "IPv6-only" -- Re: sense of draft-vf-v6ops-ipv6-deployment
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> On 31 Mar 2021, at 07:24, Brian E Carpenter <brian.e.carpenter@gmail.com> wrote:
> 
> On 31-Mar-21 04:17, Gabor LENCSE wrote:
>> I think, I can understand both of you. :-)
>> 
>> Perhaps the root cause of the difference of your understanding of "IPv6-only" is your "word view", I mean that:
>> 
>> Jordi as the first author of RFC 8585 uses the expression "IPv6-only" in the meaning of _connectivity_, as used in the terminology of RFC 8585:
>> 
>>   "IPv4aaS" stands for "IPv4-as-a-Service", meaning transition
>>   technologies for delivering IPv4 in IPv6-only connectivity.
>> 
>> Alex is experimenting with systems that were get rid of IPv4 completely by removing or switching off the IPv4 protocol stack, and thus uses the term in this sense.
>> 
>> We can decide to use "IPv6-only" for the first one or for the second one, but it will be still only our convention. Could we perhaps create and use some more precise terms?
> 
> An "IPv6-only host" seems quite unambiguous to me, as does "IPv6-only CPE". An "IPv6-only ISP" seems like a recipe for bankruptcy, however: the only question for an ISP is *how* to provide dual stack service, surely?
> 
> Regards,
>    Brian

IPv4aaS can be outsourced.  DS-Lite, 464XLAT, DNS64/NAT64 and I presume others are all amenable to be outsourced.
Eventually IPv6-only ISPs will exist and you will get your IPv4 via a third party.  This is no different to all
those that are getting their IPv6 via HE.

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-- 
Mark Andrews, ISC
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