private DfsReferral dfsReferral = null;  // For getDfsPath() and getServerWithDfs()

    protected static Dfs dfs;

    NtlmPasswordAuthentication auth; // Cannot be null
    SmbTree tree = null;             // Initially null
    String unc;                      // Initially null; set by getUncPath; never ends with '/'
    int fid;                         // Initially 0; set by open()
    int type;