3.3.4.3 DFS Subsystem Notifies That It Is Active
If the DFS subsystem is available to the CIFS server, it MUST notify the server. The server SHOULD then set the CAP_DFS flag in Server.Capabilities. After this event, the server is able to set the CAP_DFS flag in the Capabilities field of an SMB_COM_NEGOTIATE Response (section 2.2.4.52.2).<232>