Pihole blocking ui.com (unifi) even when added to whitelist

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Expected Behaviour:

when dns sec turned on and dns upstream set to opendns or cloudfare for families ui.com and subdomains should resolve. I should not have to whitelist.

Actual Behaviour:

All ui.com and subdomains dont resolve when the dns sec is turned on and I try to use either opendns or cloudfare for families. I even tried to whitelist the entire domain which didnt work. I know its the pihole as when I configure the ip manually on the client for dns resolution it works. If I uncheck "use dnssec" it also works. All other websites work.

Debug Token:

https://tricorder.pi-hole.net/LwwymPxi/

What do you see in the Query Log table?
What is the status when this domain is blocked?

FWIW, both ui.com, and community.ui.com work in my setup using Cloudflare/Quad9 with DNSSEC enabled, and no specific whitelist entry.

1 Like

Hello - I see this. I can repeat this behaviour reliably every time:

the red scribbled over part is the internal IP address of the client.

When I turn "use dnssec" off I get the following:

Notably in the second example - the red scribbled over part it doesnt show the ip address, it shows the hostname. Not sure if this is a clue. This is bizarre as no other websites are blocked. It also doesnt matter who the upstream dns resolver is (cisco family or cloudfare).