@Clive_A After removing IPv6 from my network completely, and disabling IPv6 on the ISP connection, I tried it, and it's the same: dig google.com ; <<>> DiG 9.20.8 <<>> google.com ;; global options:...

@Clive_A I could not do a DNS Lookup on the gateway or any other Omada devices connected to it, because it's not supported (everything updated to the latest available firmware): But I could do it...

When the configured DNS over HTTPS (DoH) server on my TP-Link Omada ER7412-M2 router becomes temporarily unavailable (e.g., during reboot), DNS resolution fails completely. The router does not...