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There are three random address types (Bluetooth 4.2 Core Spec, Vol 3, Part C, Section 10.8):
* Static - as the name implies, this is a fixed address chosen by the peripheral at boot and shouldn't normally change
* Resolvable Private - this is a changing address chosen by the peripheral that is validated by bonded hosts via the IRK
* Non-Resolvable Private - this is set by the host
So if the host sets the address it *must* be non-resolvable private.