Someone

#!/bin/sh
[ -z "$1" ] && echo "Error: should be run by udhcpc" && exit 1

. /etc/functions.sh
. /lib/netifd/netifd-proto.sh

set_classless_routes() {
    local max=128
    local type
    while [ -n "$1" -a -n "$2" -a $max -gt 0 ]; do
        proto_add_ipv4_route "${1%%/*}" "${1##*/}" "$2"
        max=$(($max-1))
        shift 2
    done
}

setup_interface () {
    proto_init_update "*" 1
    proto_add_ipv4_address "$ip" "$netmask"
    # TODO: apply $broadcast

    for i in $router; do
        proto_add_ipv4_route 0.0.0.0 0 "$router"
    done

    # CIDR STATIC ROUTES (rfc3442)
    [ -n "$staticroutes" ] && set_classless_routes $staticroutes
    [ -n "$msstaticroutes" ] && set_classless_routes $msstaticroutes

    for dns in $dns; do
        proto_add_dns_server "$dns"
    done
    for domain in $domain; do
        proto_add_dns_search "$domain"
    done
    proto_send_update "$INTERFACE"

    # TODO
    # [ -n "$ntpsrv" ] &&   change_state network "$ifc" lease_ntpsrv "$ntpsrv"
    # [ -n "$timesvr" ] &&  change_state network "$ifc" lease_timesrv "$timesvr"
    # [ -n "$hostname" ] && change_state network "$ifc" lease_hostname "$hostname"
    # [ -n "$timezone" ] &&     change_state network "$ifc" lease_timezone "$timezone"
}

deconfig_interface() {
    proto_init_update "*" 0
    proto_send_update "$INTERFACE"
}

case "$1" in
    deconfig)
        deconfig_interface
    ;;
    renew|bound)
        setup_interface
    ;;
esac

exit 0