DNS server - order of access

[m m.]

I have DNS server(2) and DNS-over-TLS List(2) configured in the WAN-Internet Connection page. How does the router select which DNS server to use and how does it decide when to the DoT?

 

[bbunge]

In the WAN the DNS Server (2) are used at router boot mainly to set the router time. Once booted, the DoT configured servers, also called resolvers, take over. They are used in a round robin scheme in the order you set them up.

 

[Tech9]

DoT set with Strict profile will override WAN DNS servers. They will be used for router's own queries and before Stubby starts.

Example with OpenDNS: