   WAN Section:
   -----------
	Not Much Changes are required in WAN. When the Port goes down by no
   demand change the auto_answer flag to TRUE (retain the value of 
   configured_auto_answer), So that Remote Access clients can dial in
   take the port. When there is a demand PPP will call wan_control with
   OPEN_SERIAL_PORT where we will set the auto_answer back to configured 
   auto_answer. 

   ppptimer.c:
   ---------
	In case of DOD avoid checking wheather port is answering or dialing.
   In both cases we can bring down the link.

   pppinit.c :
   ----------
	We need to reconsider the condition for setting the WAN Port
   ownership when the port is going down. (Current condition is DOD
   should be disabled and port should be answering).
