Int 61 Fn 28  - Pc/tcp Kernel V2.05+ - "net_swap" - Exchange Two Network   [N]

   AH = 28h
   BX = network descriptor 1
   CX = network descriptor 2

Return: CF clear if successful
   CF set on error
       AX = error code (see #2990 at INT 61"FTP Software")

Note:  the two descriptors will exchange places; both must be local or both
     global

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