Int 21 Fn 5F82  - LANtastic - Logout From Server                           [N]

   AX = 5F82h
   ES:DI -> ASCIZ server name (in form "\\machine")

Return: CF clear if successful
   CF set on error
       AX = error code

See Also: AX=5F81h,AX=5F88h,AX=5FCBh