Theoretically an app could use a custom DoH endpoint to retrieve ads instead of the standard dns provided by the system. As this uses purely https without a preceding dns request, pihole/adguard would fail to block it; but it’s just not something currently employed.
Theoretically an app could use a custom DoH endpoint to retrieve ads instead of the standard dns provided by the system. As this uses purely https without a preceding dns request, pihole/adguard would fail to block it; but it’s just not something currently employed.