FYI: List of 802.11 reason codes

[Tom Sharples]

Reason code Meaning

0 Reserved
1 Unspecified reason
2 Previous authentication no longer valid
3 Deauthenticated because sending station is leaving (or has left) IBSS or 
ESS
4 Disassociated due to inactivity
5 Disassociated because AP is unable to handle all currently associated 
stations
6 Class 2 frame received from nonauthenticated station
7 Class 3 frame received from nonassociated station
8 Disassociated because sending station is leaving (or has left) BSS
9 Station requesting (re)association is not authenticated with responding 
station