> On 18 Aug 2024, at 20:32, Marco Moock <m...@dorfdsl.de> wrote:
> 
> Hello!
> 
> I couldn't find anything else than https://kb.isc.org/docs/aa-01349
> for v6-bias.
> 
> Is that still relevant for current versions?

Yes.

> Is there a reason that option isn't described in the normal
> documentation?

It is.  Go to the product page.  Look at panel 3 “Configuration".  Click
on "Administrator Reference Manual (ARM)” then enter “v6-bias” in the
search box.

> I've set it to 200ms and I still see outgoing queries to IPv4
> destinations that are reachable via IPv6 and have a latency under 20 ms.

Named uses smooth measured RTT which means it still has to occasionally
talk to servers over IPv4 to measure the RTT.  Additionally lots of zones
don’t publish IPv6 glue records. The default is 50ms bias.

> -- 
> kind regards
> Marco
> -- 
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Mark Andrews, ISC
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