source: bootscripts-embedded/clfs/rc.d/init.d/network@ 8054aa2

#!/bin/ash
#
# Network interface(s) init script
#
# config: /etc/network.conf
#         /etc/network.d/interface.[devname]

. /etc/rc.d/init.d/functions
. /etc/network.conf

if [ "$NETWORKING" != "yes" ]; then
  echo "Networking is disabled in /etc/network.conf"
  exit 0
fi

case "$1" in
start)
  for i in /etc/network.d/interface.*; do
    if [ -r "$i" ]; then
      . $i
      if [ "$DHCP" = "yes" ]; then
        echo -n "Starting DHCP for interface $INTERFACE: "
        udhcpc -b -i "$INTERFACE" \
          -p "/var/run/udhcpc.$INTERFACE.pid" \
          > /dev/null
      else
        echo -n "Setting up interface $INTERFACE: "
        ifconfig "$INTERFACE" "$IPADDRESS" \
          netmask "$NETMASK" \
          broadcast "$BROADCAST" up
      fi
        check_status
    fi
  done
        
  if [ "$USE_GATEWAY" = "yes" -a -n "$GATEWAY" ]; then
    echo -n "Setting default route: "
    route add default gw $GATEWAY
    check_status
  fi
;;
stop)
  if [ "$USE_GATEWAY" = "yes" -a -n "$GATEWAY" ]; then
    echo -n "Removing default route: "
    route del -net 0.0.0.0
    check_status
  fi

  for i in /etc/network.d/interface.*; do
    if [ -r "$i" ]; then
    . $i
    echo -n "Shutting down interface $INTERFACE: "
    ifconfig $INTERFACE down
    check_status
    if [ "$DHCP" = "yes" ]; then
      kill `cat "/var/run/udhcpc.$INTERFACE.pid"`
      sleep 1
    fi
  fi
  done
;;
restart)
  $0 stop
  $0 start
;;
status)
  ifconfig
  route
;;
*)
  echo "Usage: $0 {start|stop|restart|status}"
  exit 1
esac