INT 61 - PC/TCP kernel v2.05 - "net_info" - GET INTERFACE STATISTICS
        AH = 06h
        BX = network descriptor (must be allocated and open)
        DS:SI -> 38-byte buffer (see below)
Return: CF clear if successful
            buffer filled
        CF set on error
            AX = error code (see INT 61"PC/TCP")
Desc:   returns the statistics relevant to the particular network interface
           used by the specified network descriptor
SeeAlso: INT 61"PC/TCP",INT 61/AH=00h"PC/TCP",INT 61/AH=05h"PC/TCP"

Format of buffer:
Offset  Size    Description
 00h    WORD    interface class (e.g. 802.3)
 02h    WORD    type (manufacturer) of interface
 04h    WORD    interface number
 06h    DWORD   (big-endian) IP address of interface
 0Ah    DWORD   subnet mask
 0Eh    WORD    0001h if interface is up
 10h    DWORD   total packets received
 14h    DWORD   total packets sent
 18h    DWORD   receive errors
 1Ch    DWORD   send errors
 20h    WORD    length of local net address (e.g. 0006h for Ethernet)
 22h    DWORD   pointer to local net address

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