Hi,

we’ve been working on making BIND 9 to use parent-centric delegations and I 
thought
It would be useful to turn this into an Internet-Draft.  This was also kind of 
experiment
whether LLM can create something useful if you feed it all the important data 
and know
your subject.  The result had been manually curated, I did spent some time 
reading
and updating the document.

I believe this doesn’t infringe Akamai/Nominum patent, but I’ve added a note 
about the
IPR filled against 
https://datatracker.ietf.org/doc/draft-fujiwara-dnsop-resolver-update/
anyway, as I believe it is better to be transparent about this. That said, I 
don’t have any
lawyer hats nor patent lawyer hats in my closet.

I do have all the intermediate results available, so if you are interested send 
me
a private message, I will not post this onto the mailing list.

Cheers,
Ondrej, with just BIND 9 hat this time

> Begin forwarded message:
> 
> From: [email protected]
> Subject: New Version Notification for 
> draft-sury-dnsop-parent-centric-resolver-01.txt
> Date: 16 March 2026 at 15:04:24 GMT+8
> To: "Ondřej Surý" <[email protected]>, "Colin Vidal" <[email protected]>, "Evan 
> Hunt" <[email protected]>, "Ondrej Sury" <[email protected]>
> 
> A new version of Internet-Draft
> draft-sury-dnsop-parent-centric-resolver-01.txt has been successfully
> submitted by Ondřej Surý and posted to the
> IETF repository.
> 
> Name:     draft-sury-dnsop-parent-centric-resolver
> Revision: 01
> Title:    Parent-Centric Delegation Handling in DNS Resolvers
> Date:     2026-03-16
> Group:    Individual Submission
> Pages:    24
> URL:      
> https://www.ietf.org/archive/id/draft-sury-dnsop-parent-centric-resolver-01.txt
> Status:   
> https://datatracker.ietf.org/doc/draft-sury-dnsop-parent-centric-resolver/
> HTML:     
> https://www.ietf.org/archive/id/draft-sury-dnsop-parent-centric-resolver-01.html
> HTMLized: 
> https://datatracker.ietf.org/doc/html/draft-sury-dnsop-parent-centric-resolver
> Diff:     
> https://author-tools.ietf.org/iddiff?url2=draft-sury-dnsop-parent-centric-resolver-01
> 
> Abstract:
> 
>   This document specifies a parent-centric behavioral model for DNS
>   recursive resolvers, in which delegation decisions are always based
>   on the NS RRset (or DELEG RRset) received from the parent side of a
>   zone cut and are never overwritten by child-side NS data.
> 
>   The parent-centric model eliminates the "two sources of truth"
>   problem inherent in the current DNS delegation design, closes the
>   Ghost Domain and Phoenix Domain attack vectors, provides
>   deterministic behavior in the presence of parent/child NS mismatches,
>   and enables resolvers to safely accept sibling (out-of-bailiwick)
>   glue by scoping delegation information to individual zone cuts.  It
>   also provides the behavioral foundation required for deployment of
>   the DELEG extensible delegation mechanism.
> 
>   This document updates RFC 1034 and RFC 1035.
> 
> 
> 
> The IETF Secretariat
> 
> 

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