From Newsgroup: comp.protocols.dns.bind
On 29/01/2020 11:50, Klaus Darilion wrote:
Hello Niels!
Thanks for bringing this to attention. I have reported it before [1][2] without response.
We see this regulary. AFAIS it happens actually always, but if the IXFR
is small, the performance decline is so short that you usually won't
notice it.
The bigger the zonechange ie NSEC3 change, full resigning ....* the
longer is the performance decline and you will notice it more often.
*we don't resalt or resign completele - but this is what several of our
TLD customers do.
I hope it will be fixed soon, we already test other software.
regards
Klaus
[1] https://lists.isc.org/pipermail/bind-users/2018-March/099814.html
[2] https://lists.isc.org/pipermail/bind-users/2019-March/101579.html
FYI this will be fixed in the June 2020 BIND releases (in 9.11.20,
9.16.4 and 9.17.2):
https://gitlab.isc.org/isc-projects/bind9/-/issues/1834
Cathy
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