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Re: [v6ops] IPv6 mostly for DS-Lite

Gert Doering <gert@space.net> Wed, 20 March 2024 10:56 UTC

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Date: Wed, 20 Mar 2024 11:56:06 +0100
From: Gert Doering <gert@space.net>
To: Mark Andrews <marka@isc.org>
Cc: Gert Doering <gert@space.net>, Lorenzo Colitti <lorenzo@google.com>, v6ops <v6ops@ietf.org>
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Subject: Re: [v6ops] IPv6 mostly for DS-Lite
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Hi,

On Wed, Mar 20, 2024 at 09:04:09PM +1100, Mark Andrews wrote:
> 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. 
Mmmh, now I get your point - "if there is no pre-existing NAT64 gateway
due to use of DS-Lite, ISPs would have to change their infrastructure".

I tend to disagree - NAT64 could happen on the CPE for ipv6-mostly 
"behind the CPE" networks, and then going ahead with DS-Lite'ing the
resulting IPv4 packet.  Yes, NAT4444, but for legacy things only.

"What ISPs do" and "what is spoken in the LAN segment" is decoupled for
good reasons.

Gert Doering
        -- NetMaster
-- 
have you enabled IPv6 on something today...?

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