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Re: [v6ops] draft-vf-v6ops-ipv6-deployment

otroan@employees.org Wed, 31 March 2021 07:34 UTC

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Date: Wed, 31 Mar 2021 09:33:59 +0200
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Cc: JORDI PALET MARTINEZ <jordi.palet=40consulintel.es@dmarc.ietf.org>, v6ops@ietf.org
To: Gyan Mishra <hayabusagsm@gmail.com>
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Subject: Re: [v6ops] draft-vf-v6ops-ipv6-deployment
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> In theory if you flipped a switch and all fixed broadband and wireless 4G/5G access layer providers all around the world banded together and ditched CGN and turned up IPv4AAS and so now all subscribers - all the billions of subscribers around the world are now officially IPv6 only.

No, IPv4aaS offers dual-stack service to subsbcribers.
IPv4aaS allows an ISP to run IPv6 only in the access network. As an analogy that is little different from the ISP using MPLS in the access network, that does not make the subscribers MPLS-only.

The term "IPv6 only", to have meaning must be qualified.

An IPv6 only application on an IPv6 only network communicating through a NAT64 to an IPv4 only application is not IPv6 only end to end (e.g. referrals don't work).

Best regards,
Ole

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