You could block outbound DNS at the router/firewall, or conceivably transparently proxy it there. If these don't sound easy to you (and I'm guessing they don't, I don't know if anyone has even written ...
This command reveals why your internet sucks.
Your router can do all this—and your ISP doesn't want you to know ...
I'm currently using a WRT54G router with Tomato firmware and I have a simple residential dynamic ip address cable modem. The cable modem is in "bridged" mode and the router is set to use DHCP to get ...