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802.11r Fast Transition on guest Wi-Fi

802.11r (Fast Transition) speeds roaming by letting a device pre-authenticate with multiple access points. It is valuable on controlled enterprise networks, but guest networks see a wide mix of devices (older Android phones, non-updated iOS, IoT), and some of them implement 802.11r incorrectly or ignore it. On open or web-auth guest SSIDs this can cause failed associations, devices that connect then drop, or authentication loops.

Recommendation: disable 802.11r on guest and public SSIDs unless the client environment is controlled, and enable it only on secure internal WPA2/WPA3-Enterprise networks.

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