hmmmmmmmm .. thats a good idea NOT!
It would certainly explain why what appear to be DNS problems arent solved by specifying your own choice of DNS servers
and could also explain why VPN works so much better if they have a problem with their own DNS servers.
Presumably BT cites "security" as the pretext for deploying this "DNS Hijacking".
Im not convinced that DNS Hijacking is a good enough reason for doing this. If people want to opt out and use their own DNS then they should be able too.
Despite my ISP DNS being quicker because of the slight less routing, I still use other DNS because I know that from time to time PNs DNS servers can be flaky.
I certainly agree that it is not the "correct way" to do things as "
DNS requests for any Google service are intercepted before they enter the core network, and redirected down very fast trunks doesnt quite ring true. Traffic has to traverse the core to get to the BT/Google peer points anyhow. I agree that "Marketing Research " would seem to be the most obvious reason.
The fact that Keith_Beddoe disclosed that information a few weeks ago, Im surprised that no-one has put two and two together before now especially when so many users are having what appears to be obvious DNS type issues