> One other catch is that your ISP might block you for not using their DNS; BT (UK ISP) did this
Erm ... what? How does that work? If they don't see DNS requests from you at their resolver for a week, they disable your connection?!
Erm ... what? How does that work? If they don't see DNS requests from you at their resolver for a week, they disable your connection?!
I assume they detected it simply by seeing DNS queries going to non-BT servers. Note this was a few years ago when it was pretty common for PC malware to hijack DNS requests, so could be it's changed in the meantime.
N.B. I also recall BT redirecting requests for non-existent domains to some partner of theirs, I assume experimentally as I haven't seen or heard of that for a while.
They are still doing this. I ran into it just yesterday. They do however make it very easy (click a couple of links) to turn it off.
Thanks for the update (if somewhat depressing to know they still get away with it).