BIND9 9.21.21 DoT Forwarding Fails with Quad9 (9.9.9.9 etc) ; Cloudflare/Google/own unbound work OK
pgnd
pgnd at dev-mail.net
Sun May 3 19:38:53 UTC 2026
hi
> Firstly, that is the way BIND works. If you are forwarding, it will try all forwarders, with a variable timeout (based on response
> time), plus retries and only when all of them fail will it fallback to iteration, assuming "forward first", the default.
... snip ...
The idea is to give your Unbound forwarder
... snip ...
_this_ issue's about bind9 DoT forwarding NOT working when Quad9's servers are used.
Unbound isn't in the picture at all in that case.
and that it DOES work if -- instead -- i use any of Cloudflare, Google, or my own (@ unbound on VM) DoT listeners.
it's possible i've missed your point :-/
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