In fact, there's a long history of people trying to publish anonymized IP logs in ways that preserve the IP address structure (i.e. anonymized ip's from the sam

In fact, there's a long history of people trying to publish anonymized IP logs in ways that preserve the IP address structure (i.e. anonymized ip's from the same subnet end up in the same anonymous subnet). It turns out that leaking that structure frequently ends up identifying the IP addresses. The bottom line is beware of academics baring leakage functions. Their work often has considerable merit, but one must be very careful about how it's used in practice.