Late Wednesday evening, Google employees posted an "Internet-Draft" outlining proposed changes to the DNS protocol that allow authoritative DNS servers to see the addresses of clients. This way, geographically distributed content delivery networks can tailor their answers to a specific client's network location. So a client from California would talk to a server in California, while a client in the Netherlands would talk to a server in the Netherlands.
more on ars technica:
Google wants to see client addresses in DNS queries