> On 19 Aug 2024, at 00:59, Marco Moock <m...@dorfdsl.de> wrote: > > Am 18.08.2024 um 23:44:26 Uhr schrieb Mark Andrews: > >>> On 18 Aug 2024, at 20:32, Marco Moock <m...@dorfdsl.de> wrote: > >> 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. > > https://bind9.readthedocs.io/en/v9.18.28/reference.html#namedconf-statement-v6-bias > > As I searched on isc.org, I couldn't find it. > >>> 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. > > Can that be disabled, so IPv4 fallback will only be used when IPv6 > query takes longer than the time set in v6-bias?
It “doesn’t fall back to IPv4”. It sorts all the known server addresses for the zone adding v6-bias to the srtt of the IPv4 servers to order them. These are then tried in order using the actual srtt for the query timeout to move to the next server. 'rndc dumpdb' will allow you to see the srtt of the servers. > -- > kind regards > Marco > > Send unsolicited bulk mail to 1724017466mu...@cartoonies.org > -- > 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 -- Mark Andrews, ISC 1 Seymour St., Dundas Valley, NSW 2117, Australia PHONE: +61 2 9871 4742 INTERNET: ma...@isc.org -- 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
