# Bind 9 upcoming changes

**URL:** <https://forum.hestiacp.com/t/bind-9-upcoming-changes/21621>\
**Category:** DNS\
**Created:** [April 8, 2026, 6:35pm UTC](https://forum.hestiacp.com/t/bind-9-upcoming-changes/21621 "2026-04-08T18:35:58Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![nu01](https://forum.hestiacp.com/user_avatar/forum.hestiacp.com/nu01/32/7639_2.png) [@nu01](https://forum.hestiacp.com/u/nu01)\
**Post date:** [April 8, 2026, 6:35pm UTC](https://forum.hestiacp.com/t/bind-9-upcoming-changes/21621/1 "2026-04-08T18:35:58Z")

</div>

A significant change in resolver behavior is in progress:

```auto
"[...] BIND 9 is switching to a parent-centric model of delegations. [...] The NS records in the child domain will be treated as normal DNS records and returned as authoritative data, but they will no longer overwrite the delegation data for the domain."

```

> **[BIND 9.21+/9.22: parent-centric delegations and no TTL-based cleaning](https://lists.isc.org/pipermail/bind-users/2026-April/110552.html)**

> **[John Kristoff (@jtk@infosec.exchange)](https://infosec.exchange/@jtk/116370054058257152)**
>
> A pretty significant change in resolver behavior is proceeding:
> 
> "\[...\] BIND 9 is switching to a parent-centric model of delegations. \[...\] The NS records in the child domain will be treated as normal DNS records and returned as authoritative data,...