When a FlexConnect access point enters standalone mode, it disassociates all clients that are on centrally switched WLANs. Controller-dependent activities, such as network access control (NAC) and web authentication (guest access), are disabled. However, a FlexConnect access point supports dynamic frequency selection (DFS) in standalone mode. Reference: https://www.cisco.com/c/en/us/td/docs/wireless/controller/7- 2/configuration/guide/cg/cg_flexconnect.html