

i hoped there are some config values that i am unaware of to do the changes i want.
open source = some parts of the code can be open at best, it isnt what it sound. license matters. this word is just a trick.
yet, i wouldnt count on someone auditing code, there was lots of big projects with trully open code that had bad code injected for decades and noone noticed.
as much as i know, those extensions call back on developer server for updates/new filters etc. so i skip.

your dns server relays on another upstream dns server that could be down so whats the point