diskimage-builder/elements/ramdisk/init.d/02-start-network

echo "starting network $BOOT_MAC_ADDRESS"
t=0
while ! BOOT_INTERFACE=$(find_interface "$BOOT_MAC_ADDRESS"); do
    t=`expr "$t" + 5`
    if [ "$t" -gt 10 ]; then
        break
    fi
    sleep 5
done
if [ -z "$BOOT_INTERFACE" ]; then
    err_msg "Could not find an interface that owns MAC: $BOOT_MAC_ADDRESS"
    troubleshoot
fi

readonly BOOT_INTERFACE

ifconfig lo 127.0.0.1 up
rv=0
ifconfig "$BOOT_INTERFACE" up || rv=1
if [ $rv -ne 0 ]; then
    sleep 10
    rv=0
    ifconfig "$BOOT_INTERFACE" up || rv=1
    if [ $? -ne 0 ]; then
        err_msg "Failed to ifconfig up $BOOT_INTERFACE"
        troubleshoot
    fi
fi
ifconfig "$BOOT_INTERFACE" "$BOOT_IP_ADDRESS" netmask "$BOOT_NETMASK"
route del default || true
route add default gw $BOOT_GATEWAY

echo "pinging to boot server $BOOT_SERVER"
w=30
while [ $w -gt 0 ]; do
    ping -c 5 -q "$BOOT_SERVER" > /dev/null
    if [ $? -eq 0 ]; then
        break
    fi
    sleep 1
    w=`expr $w - 5`
done

echo "network ready"