Hi
So you are saying that relying on the provider dns and having to use it instead of other public (non-modifying) DNS Servers will not feed the internet provider with this „valuable personal data“?
There are privacy laws in place. I would not consider this good practice. I don't think (maybe I'm mistaking) that an ISP would have any benefit of collecting, analyzing such data. Selling / using such data for marketing would probably cash with privacy laws. Disclaimer: IANAL.
Also are you saying that the user shouldn‘t use any public, non-modified DNS Servers, just for that fact? Are you implementing the same measures as Swisscom?
There are legal requirements regarding DNS which OFCOM registered TSP have to follow.
So, yes, I understand every nerd who operates their own DNS server to avoid his personal data being used by the 'big ones' and to get 'free' access to the whole internet, but I don't understand why customers would want to use 8.8.8.8 or 1.1.1.1 instead of their providers DNS for those reasons.
Mit freundlichen Grüssen
-Benoît Panizzon-