Hello @David-TP, thank you for the reply.

With only being able to edit LAN-side DNS severs, it means they are still ultimately governed by the WAN-side DNS server filter rules (set by the ISP), so you are unable to achieve true transparency. The ISP filters can often have bizarre blocks in place, usually for commercial reasons, which is why I like to use independent DNS servers.

Best regards.

Hello @David-TP,

Following up on this; once, and so far once only, I have been able to access seemingly hidden "advanced settings" in More>Internet Connection on the IPv4 tab (achieved by clicking the IPv4 Connection text - there was no arrow on the right side as there is under the IPv6 tab) and change the DNS servers to my desired addresses.

So it appears the ability exists in the firmware, however it has not been correctly implemented as I have been unable to replicate this action, I have tried clicking everywhere on the IPv4 tab page since without success?

Best regards.