IPv6 NS address fetch failures in BIND despite IPv4-only network

[Greg]

Hello.
There are a few techniques you could try. Some are mentioned here: https://kb.isc.org/docs/aa-00206 But a more recent one, introduced in 9.20.6, is `query-source-v6 none`.

Try some of those and see if any help in your environment.

Cheers, Greg
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