The phone will associate successfully with the network, but the router logs will show a different identifier than the one you expect. The second is the "Source Address," which should belong to the connecting device.
Why Your iPhone MAC Address Changes With Every Connection
Convenience Trade-off It is important to recognize the security benefits that randomization provides. This defense mechanism protects against location profiling and targeted advertising based on physical movement.
The first is the "BSSID" or the actual router address. It is a static fingerprint that does not change based on the network you join or the settings you adjust within the iOS operating system.
Why Your iPhone MAC Address Changes With Every Connection
When this setting is deactivated, the iPhone MAC address different on router observations will cease, and the router will log the permanent identifier assigned during manufacturing. This hardware address is typically burned into the device during manufacturing and serves as a global unicast address.
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