INT 60 - FTP Packet Driver - EXTENDED FUNC - GET STATISTICS
        AH = 18h
        BX = handle (optional for v1.10+)
Return: CF set on error
            DH = error code (01h) (see AX=01FFh)
        CF clear if successful
            DS:SI -> statistics (see below)

Format of statistics:
Offset  Size    Description
 00h    DWORD   packets in
 04h    DWORD   packets out
 08h    DWORD   bytes in
 0Ch    DWORD   bytes out
 10h    DWORD   errors in
 14h    DWORD   errors out
 18h    DWORD   packets dropped

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