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Re: [v6ops] IPv6 mostly for DS-Lite

Mark Andrews <marka@isc.org> Wed, 20 March 2024 10:31 UTC

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From: Mark Andrews <marka@isc.org>
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Date: Wed, 20 Mar 2024 21:30:59 +1100
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References: <8E0F3CEB-2A6B-4C74-A494-6A972BE2C75B@employees.org>
Cc: Gert Doering <gert@space.net>, v6ops <v6ops@ietf.org>
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To: Ole Troan <otroan@employees.org>
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Subject: Re: [v6ops] IPv6 mostly for DS-Lite
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DS-lite specifies node level usage including having the CPE providing the configuration options for IPv6-only. This was before DNS64/NAT64 existed. 

-- 
Mark Andrews

> On 20 Mar 2024, at 21:11, Ole Troan <otroan@employees.org> wrote:
> 
> Mark,
> 
>> So ISPs have to back out DS-lite and deploy NAT64 just so people can deploy IPv6 mostly. We have provided a number of IPV4AAS mechanisms which all work at the node level as well as CPE level.  It should be possible to support any of them.
> 
> So this has a slightly different deployment model.
> Where the mechanism is taken all the way to the host.
> 
> More akin to https://datatracker.ietf.org/doc/html/draft-bound-dstm-exp-00 than anything.
> 
> It depends on a NAT64 somewhere along the way. It could be on the first-hop router / CPE or in the provider network.
> 
> DS-lite and friends are built to provide a dual stack network downstream. IPv6 mostly is leaving that to the host itself with an IPv6 mostly network.
> 
> But yes, it could replace all of the DS-lite, MAP-E, MAP-T, LW46, … mechanisms. :-)
> 
> Cheers,
> Ole

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