The article talks about ISPs running replacement servers to counter this. It is not clear, but it sounds like these servers would be intercepting DNS requests t

The article talks about ISPs running replacement servers to counter this. It is not clear, but it sounds like these servers would be intercepting DNS requests to the formerly bad servers and that is why Vixie is against it being a long term solution. He suggests that ISPs could intentionally break infected customers in small batches to get the customers to call for help, but couldn't such infrastructure be used to detect infected customers and send out assistance?