I use Brave version 1.1.23 Chromium: 79.0.3945.88 (Official Build) (64-bit) Linux Ubuntu 18.04. There is still no option for dns over https under flags. Any clues when this option will be added to all versions?
Chromium DNS auto-upgrades to DoH are currently disabled on Linux and so until that’s fixed they will also be disabled on Linux. That’s why you don’t see the option in
I don’t know when it will be fixed in Chromium, but I can tell you that Brave enables DoH auto-upgrades by default and so you won’t have to do anything to turn it on once it becomes available.