BIND assigns a score based on every IP it talks to and a hit rate. (so if ns1.foo.com resolves to 3 IPs, each is tracked individually, same if ns1.bar.com and n

BIND assigns a score based on every IP it talks to and a hit rate. (so if ns1.foo.com resolves to 3 IPs, each is tracked individually, same if ns1.bar.com and ns1.baz.com are the same IP) It is a pretty small cache, maybe like 1024? This is all from fuzzy 5 year old memory.