Int 60 Fn 06  - FTP Packet Driver - BASIC Func - Get Address               [N]

   AH = 06h
   BX = handle (optional for v1.10+)
   ES:DI -> buffer
   CX = length

Return: CF set on error
       DH = error code (see AX=01FFh)
   CF clear if successful
       CX = length

Note:  copies the local net address associated with the handle into the buffer