At the moment, this is an A/B test to see if DNS over HTTPS can keep up with regular DNS in term of performance in a real-world setting. It’s an opt-in study. T

At the moment, this is an A/B test to see if DNS over HTTPS can keep up with regular DNS in term of performance in a real-world setting. It’s an opt-in study. That’s about the extend of it. You can explicitly enable DNS over HTTPs on recent FF versions if you want to, then you need to pick a provider. There are a few available choices out there. There’s a list on the cURL docs IIRC. Due to the standard being finalized right now, the list is understandably quite short, by there’s no particular reason you ISP shouldn’t offer a suitable DNS server in the future.