Linksys WRT54GL, DD-WRT persistant PPPOE

A script I've put together to make my DSL PPPOE dialup persistant. First open the DD-WRT web interface, set WAN to PPPOE and configure a dummy username and password. Then go to Administration, Commands and paste the following script. Change your DSL username and password and save it, Startup Script.

#!/bin/sh
PATH=/usr/sbin:/sbin:/usr/bin:$PATH

#ISP
USER=myispusername
PASS=myisppassword
#OTHER SETTINGS
INTRFACE=nic-vlan1
TIMEOUT=120

setdefaultroute () {
echo ...applying default route
route del default
route del default
route del default
route add default ppp0
}

connect () {
gpio disable 3; sleep 1
pppd plugin /usr/lib/rp-pppoe.so $INTRFACE noipdefault noauth nodefaultroute noaccomp noccp nobsdcomp nodeflate nopcomp novj novjccomp nomppe nomppc usepeerdns user $1 password $2 default-asyncmap mtu 1492 mru 1492 persist lcp-echo-interval 60 lcp-echo-failure 10 maxfail 0 unit $3
gpio enable 3; sleep 1
}

connlinkppp () {
while true
  do
    if [ `ip link show dev ppp0 |grep ppp0 |awk '{ print $2 }'` == "ppp0:" ]
      then
        echo ...ppp link is up
        break
      else
        echo ...waiting for ppp to connect
        gpio disable 3; sleep 1
        gpio enable 3; sleep 1
    fi
done
}

echo Starting link checking procedure... Please wait...
sleep 40

while true
  do
    if [ `ip link show dev ppp0 |grep ppp0 |awk '{ print $2 }'` == "ppp0:" ]
      then
         echo ...ppp link is up
      else
         connect $USER $PASS 0
         connlinkppp
         sleep 10
         setdefaultroute
    fi 

    if [ `ip link show dev ppp1 |grep ppp1 |awk '{ print $2 }'` == "ppp1:" ]
      then
         echo ...Resetting all ppp connections
         killall redial
         killall pppd
      else
         echo all ppp connections seems good
    fi
   echo returning to main loop...
   sleep $TIMEOUT
done

Reboot the router!