EDE 18/20 recursion failures after devel release upgrade 9.21.14 -> 9.21.15. bug, or config change req'd?

[Greg Choules]

Hi.
Looking at the dig flags it suggests you changed your config.

In the first example the flags are qr (query), rd (recursion desired) ra
(recursion available)
In the second, ra is missing and dig tells you that explicitly:

                ;; WARNING: recursion requested but not available

Since the digs were to your local resolver, I think something must have
changed in your config. The default for "recursion" hasn't changed; it's
still "yes". Did you set it to "no"?

Hope that helps.
Cheers, Greg

On Wed, 19 Nov 2025 at 13:53, pgnd <pgnd at dev-mail.net> wrote:

> building devel release on
>
>         distro
>                 Name: Fedora Linux 43 (Forty Three)
>                 Version: 43
>                 Codename:
>
> v9.21.14
>
>         rpm -qa | grep bind9-current
>                 bind9-current-git_v9.21.14-0.20251119_130057.fc43.x86_64
>
>         named -V
>                 BIND 9.21.14 (Development Release) <id:noscm>
>                 running on Linux x86_64 6.17.8-300.fc43.x86_64 #1 SMP
> PREEMPT_DYNAMIC Fri Nov 14 01:47:12 UTC 2025
>                 built by meson with ...
>
> resolves ok
>
>         dig A isc.org @::1
>
>                 ; <<>> DiG 9.21.14 <<>> A isc.org
>                 ;; global options: +cmd
>                 ;; Got answer:
>                 ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 63331
>                 ;; flags: qr rd ra ad; QUERY: 1, ANSWER: 4, AUTHORITY: 0,
> ADDITIONAL: 1
>
>                 ;; OPT PSEUDOSECTION:
>                 ; EDNS: version: 0, flags:; udp: 4096
>                 ; COOKIE: b1c0919d86c0b01001000000691dc03a9ed8ea5890000147
> (good)
>                 ;; QUESTION SECTION:
>                 ;isc.org.                       IN      A
>
>                 ;; ANSWER SECTION:
>                 isc.org.                244     IN      A
>  151.101.194.217
>                 isc.org.                244     IN      A
>  151.101.2.217
>                 isc.org.                244     IN      A
>  151.101.66.217
>                 isc.org.                244     IN      A
>  151.101.130.217
>
>                 ;; Query time: 0 msec
>                 ;; SERVER: ::1#53(::1) (UDP)
>                 ;; WHEN: Wed Nov 19 08:03:54 EST 2025
>                 ;; MSG SIZE  rcvd: 128
>
> after upgrade to v9.21.15
>
>         rpm -Uvh \
>          bind9-current-git_v9.21.15-0.20251119_131709.fc43.x86_64.rpm \
>
>         systemctl restart bind9-current
>
>         named -V
>                 BIND 9.21.15 (Development Release) <id:noscm>
>                 running on Linux x86_64 6.17.8-300.fc43.x86_64 #1 SMP
> PREEMPT_DYNAMIC Fri Nov 14 01:47:12 UTC 2025
>                 built by meson with ...
>
> resolver fails
>
>         dig A isc.org @::1
>
>                 ; <<>> DiG 9.21.15 <<>> A isc.org @::1
>                 ;; global options: +cmd
>                 ;; Got answer:
>                 ;; ->>HEADER<<- opcode: QUERY, status: REFUSED, id: 29342
>                 ;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 0,
> ADDITIONAL: 1
>                 ;; WARNING: recursion requested but not available
>
>                 ;; OPT PSEUDOSECTION:
>                 ; EDNS: version: 0, flags:; udp: 4096
>                 ; COOKIE: e714b97a4e1821be01000000691dc69fed0b5edc11f55428
> (good)
>                 ; EDE: 18 (Prohibited)
>                 ; EDE: 20 (Not Authoritative): (recursion disabled)
>                 ;; QUESTION SECTION:
>                 ;isc.org.                       IN      A
>
>                 ;; Query time: 0 msec
>                 ;; SERVER: ::1#53(::1) (UDP)
>                 ;; WHEN: Wed Nov 19 08:31:11 EST 2025
>                 ;; MSG SIZE  rcvd: 94
>
> note the
>
>         ; EDE: 18 (Prohibited)
>         ; EDE: 20 (Not Authoritative): (recursion disabled)
>
> and logs filling with
>
>         19-Nov-2025 08:32:48.468 resolver: debug 1: set ede: info-code 18
> extra-text (null)
>         19-Nov-2025 08:32:48.468 resolver: debug 1: set ede: info-code 20
> extra-text recursion disabled
>
>
> i see back in
>
>         Notes for BIND 9.21.7
>                 ...
>                 Support was added for EDE codes 20 (Not Authoritative)
> when the client requests recursion (RD) but the server has recursion
> disabled.
>                 ...
>
> but nothing obvious in 9.21.15 release notes re: EDE xx, recursion
>
> is this a bug? or a required change in config?
> --
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> from this list.
>
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