[ztoben]

They didn't say whitelist ad providers, they said sites. Which you can do with pi-hole.

[supergauntlet]

How does a DNS blocker know what requests are caused by what site? It's a stateless protocol.

[ztoben]

Yeah, that was a misunderstanding on my part.

I suppose for their whitelist/blacklist to work with regex matching the ads would have to be served from a similarly named domain. Like facebook.com vs ads.facebook.com, and you'd have to whitelist *facebook.com. And if they were getting ads externally you'd have to whitelist those ads for every site that you visit.