iOS 8 is Randomizing MAC Addresses
This seems like a good idea.
Posted on June 10, 2014 at 4:40 PM
(Collisions between random addresses are unlikely with 46 bits of entropy, assuming a good source of randomness.)
This is the birthday problem. Collisions become likely with around 2^23 random address. If we are talking a single WiFi node 8 million devices is a lot, if we're talking about a global system 8 million is small and collisions will be common.
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