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Hi Alper, Alper Yegin wrote: If the station have discovered the *prefix(es)* associated with an AP earlier during its neighborhood discovery phase, and assuming that it finally associates with this AP, do you think *reachability test* is necessary ?If the STA is going to perform a reachability test in any case, As I specified in my draft, the original purpose of these *advertised prefix(es)* is to enhance Movement Detection operation. There might be other possible use-cases ...can I pre-configure/verify a CoA (plus DAD) for this prefix in advance or maybe *initialise* a fast-handoff operation.what is the functionality of learning the possible prefixes? Imagine having a bunch of long network cables, each connected to different subnets. However, these cables are tagged physically with a *prefix* tag, in this case, you simply choose your choice of subnet and plug it into your device. Cheers, Paul Tan |