I'm not sure if this is pure coincidence, but it seems like every time I enabled a floor of APs to work in hybrid mode, I end up with several clients getting disconnected throughout the day. Several colleagues and myself all connecting to the same AP, got disconnecting at the same time - twice. I setup our MACs for debugging a couple of weeks ago since we were occasionally getting disconnected, and here is the message I'm seeing logged for us:
Feb 19 08:25:31 :501065: <DBUG> |stm| send_ageout_sta_ack 8157: Send ageout sta aa:bb:cc:dd:ee:ff ack back to AP (X.X.X.X)
Feb 19 08:25:31 :501105: <NOTI> |stm| Deauth from sta: aa:bb:cc:dd:ee:ff: AP X.X.X.X-aa:bb:cc:dd:ee:ff-CAP01 Reason Unspecified Failure
I opened a case with TAC and send them the tech support logs from immediately after this occured. I thought I'd see if anyone else here has come across this behavior or can decrypt the above error message?