#!/bin/sh
  #
  # $Id: dhcp3-relay,v 1.1 2004/04/16 15:41:08 ml Exp $
  #
  
  # What servers should the DHCP relay forward requests to?
  # e.g: SERVERS="192.168.0.1"
  SERVERS=""
  
  # On what interfaces should the DHCP relay (dhrelay) serve DHCP requests?
  INTERFACES=""
  
  # Additional options that are passed to the DHCP relay daemon?
  OPTIONS=""
  
  # Read configuration variable file if it is present
  CFG_FILE="/etc/default/dhcrelay"
  [ -r "${CFG_FILE}" ] && . "${CFG_FILE}"
  
  # Sanity checks
  test -f /usr/sbin/dhcrelay || exit 0
  test -n "$INTERFACES" || exit 0
  test -n "$SERVERS" || exit 0
  
  # Build command line for interfaces (will be passed to dhrelay below.)
  IFCMD=""
  for I in $INTERFACES; do
  	IFCMD=${IFCMD}"-i "${I}" "
  done
  
  DHCRELAYPID=/var/run/dhcrelay.pid
  
  case "$1" in
  	start)
  		printf "Starting DHCP relay: "
  		start-stop-daemon -S -q -x /usr/sbin/dhcrelay -- -q $OPTIONS $IFCMD $SERVERS
  		[ $? = 0 ] && echo "OK" || echo "FAIL"
  		;;
  	stop)
  		printf "Stopping DHCP relay: "
  		start-stop-daemon -K -q -x /usr/sbin/dhcrelay
  		[ $? = 0 ] && echo "OK" || echo "FAIL"
  		;;
  	restart | force-reload)
  		$0 stop
  		$0 start
  		;;
  	*)
  		echo "Usage: $0 {start|stop|restart|force-reload}"
  		exit 1
  esac
  
  exit 0