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Re: [Snac] where/how to document NAT64 (and DNS64)?

Juliusz Chroboczek <jch@irif.fr> Tue, 25 October 2022 10:14 UTC

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Date: Tue, 25 Oct 2022 12:13:57 +0200
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From: Juliusz Chroboczek <jch@irif.fr>
To: Michael Richardson <mcr+ietf@sandelman.ca>
Cc: snac@ietf.org
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Subject: Re: [Snac] where/how to document NAT64 (and DNS64)?
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> c) is there a way to detect if there even is an IPv4 uplink?  DHCPv4 has this
>    fault that it can't not announce a default route.

Why do you have DHCPv4 in the first place if you have no IPv4 uplink?
(There's also draft-ietf-6man-ipv6only-flag, but it's expired.)

>    Do we even care here?

It gives you early failure.  It reduces Happy Eyeballs traffic.  It
reduces the amount of state at the stub router.

-- Juliusz

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