Problem resolving a host wenn TTL of NS-Servers runs out

[Colin Vidal]

Hi,

>> I was able to reproduce the problem locally and have full log of it,
>> I'll investigate more tomorrow. While there is a misconfiguration on
>> the authoritative side (the TTL of the name servers at the delegation
>> should be the same as in the child zone), this sounds like something's
>> wrong in the resolver anyway.
> 
> Did you have any time to investigate it further?

Yes, there is an opened issue and a possible fix for the problem, see https://gitlab.isc.org/isc-projects/bind9/-/issues/5588 and https://gitlab.isc.org/isc-projects/bind9/-/merge_requests/11535

-- 
Colin Vidal -- colin at isc.org
Internet Systems Consortium