3.2.4.3.1 SMB_COM_NT_CREATE_ANDX Request
To access these extensions, the application can also provide:
RequestExtendedResponse: A BOOLEAN. If TRUE, then it indicates that the application is requesting a server to send an extended response.
If the application is requesting an extended server response, then the client MUST set the NT_CREATE_REQUEST_EXTENDED_RESPONSE flag in the SMB_Parameters.Flags field of the request.
For a named pipe request, the client MUST set the SYNCHRONIZE bit in the DesiredAccess field if the FILE_SYNCHRONOUS_IO_ALERT or FILE_SYNCHRONOUS_IO_NONALERT bit is set in the CreateOptions field.