I use "ifconfig ppp0" and checkinf for the errorlevel (if $? is 0 ppp0 is up, otherwise is down), but I'm not sure if it could work in your case.

What about just pinging your WAN gateway and redialing if not responds?

Quote:
ping -q -c 1 $(nvram get wan_gateway) > /dev/null
if [ $? != 0 ] ; then
led white on
service wan restart
led white off
fi
Btw, you don't really need using a while loop if the check is cronned, or you'll risk to have more than one script running at the same time (with consequent random behaviour ).

I'd also put cron every 3 or 5 mins, just to avoid pinging continuosly your gateway

PS.Edit led commands as you wish ;)