Int 61 Fn 25  - Pc/tcp Kernel V2.05+ - "ad_res_name" - Get Host Name Give  [N]

   AH = 25h
   DX,BX = IP address in network order
   CX = length of buffer for name
   DS:SI -> buffer for host name

Return: CF clear if successful
      buffer filled with ASCIZ host name
   CF set on error
       AX = error code (see #2990 at INT 61"FTP Software")

Note:  this function will use the host table and or DNS to resolve the
     address, depending on kernel configuration.  Use this call for the
     normal gethostbyaddr function.

See Also: INT 61"FTP Software",INT 61/AH=00h"PC/TCP",INT 61/AH=26h,INT 61/AH=27h