On Tue, Aug 16, 2022 at 05:28:19PM +0200, Tom wrote:
Using BIND-9.18.5 as a recursive server:
What's the reason, that BIND answers with the additional section for the
the following query where for example Knot resolver and also PowerDNS
resolver doesn't add the additional section for the same query?
[...]
Any hints why BIND adds the additional section while other resolvers
doesn't? Is there an option in BIND to behave like Knot/PDNS?
On 8/17/22 02:27, Evan Hunt wrote:
The option is "minimal-responses". If you set it to "yes", it will omit
authority and additional section data except when necessary.
The default is "no-auth-recursive", which omits authority section data
when it isn't strictly necessary, but will still add additional data for
records in the answer section.
On 8/17/22 06:45, Tom wrote:
I've already set "minimal-responses yes;", but the additional
section/data is still shown. So based on your explanation, BIND
assumes, this data is necessary, why? And why behaves BIND different
here than Knot/PDNS where no additional section is shown for the
same query?
On 22.08.22 15:06, Tom wrote:
Does an BIND expert has an idea or an explanation, why the additional
section is still shown, although "minimal-responses yes;" is set? And
why the additional section seems necessary for BIND and not for
example for Knot/PDNS for the same query?
ftp://ftp.isc.org/isc/bind9/9.18.5/doc/arm/html/reference.html#namedconf-statement-minimal-responses
yes: the server only adds records to the authority and additional sections
when such records are required by the DNS protocol (for example, when
returning delegations or negative responses). This provides the best server
performance but may result in more client queries.
--
Matus UHLAR - fantomas, uh...@fantomas.sk ; http://www.fantomas.sk/
Warning: I wish NOT to receive e-mail advertising to this address.
Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu.
Support bacteria - they're the only culture some people have.
--
Visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from
this list
ISC funds the development of this software with paid support subscriptions.
Contact us at https://www.isc.org/contact/ for more information.
bind-users mailing list
bind-users@lists.isc.org
https://lists.isc.org/mailman/listinfo/bind-users
