Techniques are presented herein that leverage the ability of wireless clients to employ a non-constant media access control (MAC) address (to, for example, avoid long-term tracking and identification) and which support a method for segmenting a MAC address field while making sure that wireless clients can still use a per-association non-constant or randomized MAC address (thus solving the tracking and radio collision issue). Aspects of the presented techniques ensure that collisions are prevented on the Distribution System Medium (DSM)/Distribution System Services (DSS) and ensure that a wireless infrastructure can still identify a wireless client across associations and during roaming. Use of such (composed) client MAC addresses in a Layer 2 (L2) infrastructure avoids full randomization and allows for decentralized client lookup and access point (AP) access identification.
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Vegas, Thomas; Karmakar, Anirban; Cuissard, Vincent; and Gazzarrini, Loris, "LAYER 2 COLLISION AVOIDANCE USING COMPOSED MAC ADDRESS", Technical Disclosure Commons, (April 04, 2022)