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Re: [BEHAVE] [DNSOP] [v6ops] New Version Notification for draft-momoka-v6ops-ipv6-only-resolver-00.txt

Geoff Huston <gih@apnic.net> Sun, 16 October 2022 21:57 UTC

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From: Geoff Huston <gih@apnic.net>
To: Michael Richardson <mcr+ietf@sandelman.ca>
CC: Joe Abley <jabley@hopcount.ca>, dnsop <dnsop@ietf.org>, 6man list <ipv6@ietf.org>, "behave@ietf.org" <behave@ietf.org>, v6ops list <v6ops@ietf.org>
Thread-Topic: [DNSOP] [BEHAVE] [v6ops] New Version Notification for draft-momoka-v6ops-ipv6-only-resolver-00.txt
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Subject: Re: [BEHAVE] [DNSOP] [v6ops] New Version Notification for draft-momoka-v6ops-ipv6-only-resolver-00.txt
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> On 17 Oct 2022, at 7:53 am, Michael Richardson <mcr+ietf@sandelman.ca> wrote:
>   I think that's because
> recursive nameserves effectively have always done an equivalent to "happy
> eyeballs", so the risk is low.
> 


That certainly was not the case in 2015: https://www.potaroo.net/presentations/2015-10-04-dns-dual-stack.pdf

I have not seen a large scale measurement since then but I suspect that nothing has changed. i.e.: 
recursive resolvers do not do the equivalent of happy eyeballs behaviour.

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