[DNSOP] Re: [Ext] Indicating ipv6only and deprecation vi a SVCB: draft-nygren-dnsop-ipv6only-indicator-00.txt

Paul Hoffman <[email protected]> Tue, 7 Jul 2026 14:56:58 +0000
Newsgroups gmane.ietf.dnsop,gmane.ietf.v6ops
Message-ID <[email protected]>
Two responses on Mastodon from the lead developers of curl:

@[email protected] @[email protected] modern clients supporting this are also the most likely to already do happy eyeballs and should already handle ipv6 only hosts just fine...
https://mastodon.social/@bagder/116877328366954848

@[email protected] @[email protected] @[email protected] 
Yeah, I think I understand the intention behind this, eg a CDN offloading its ipv4 endpoints over time, but

- non happy eyeballing clients will not see this
- HE clients already give high preference to ipv6
- telling clients they MUST NOT use ipv4, although the records are there and ipv6 hasn‘t responded yet, is silly. It will not be obeyed.💁🏻‍♂️
https://chaos.social/@icing/116877374186732839


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