DNS Leak :53?

Hello. I've had port 53 open for a while now. Adguard then reports my modem address in the "upstreams" section, where port 53 is appended. I've now investigated the IP address the request is coming from, and it's a university in Slovenia. How can you bypass the three upstream servers I specified and open port 53? I'm attaching photos.

Hi

Please verify that the following option is enabled.

This is a feature of AdGuard Home that allows it to resolve the hostname of devices on your LAN.
It does not cause DNS leaks or allow your ISP to track your activity.

You can disable this feature in the AdGuard Home Admin Panel under Settings > DNS settings.
Alternatively, enter your router's LAN address to prevent using your ISP's DNS.