I’ve been using adguards free DNS to eliminate adds and recently switched to Mullvads add free DNS. Mullvad lets through a few ads adguad catches but stops many other things. Since Netguard has 2 slots for DNS, I put them both. Is that a problem, or do I have the best of both worlds?
My understanding is the first one is the primary one, and will be used most of the time. The second one is the fallback and will be used if the primary isn’t reachable
Usually you’d have two different addresses from the same service to configure DNS
Listing addresses from two different services would get you a slightly inconsistent experience, where every once in awhile a different block list will be used
This depends on your OS. Many do it this way, but some (I think Windows is included here) periodically check and use the “fastest” one. I run 2 local DNS, and my windows devices tend to represent about 99% of the the queries showing up on the second DNS (which sees much lower traffic overall).
I have no idea what happens when you have 2 different blocklists though - it feels like you could open yourself up to a scenario where you only get content blocked if it’s blocked on BOTH lists, which would be the worst of both worlds in a sense.