No worries, and you're absolutely right that it depends on your application whether this is a problem or not! Estimating population sizes? "Unrecognised IP add

No worries, and you're absolutely right that it depends on your application whether this is a problem or not! Estimating population sizes? "Unrecognised IP addresses?" Probably fine. Interning the hash and using the real IP address in a database someplace? Probably not.