buildroot

#!/bin/sh

​

# udhcpc script edited by Tim Riker <Tim@Rikers.org>

​

[ -z "$1" ] && echo "Error: should be called from udhcpc" && exit 1

​

RESOLV_CONF="/etc/resolv.conf"

[ -e $RESOLV_CONF ] || touch $RESOLV_CONF

[ -n "$broadcast" ] && BROADCAST="broadcast $broadcast"

[ -n "$subnet" ] && NETMASK="netmask $subnet"

​

case "$1" in

    deconfig)

        /sbin/ifconfig $interface up

        /sbin/ifconfig $interface 0.0.0.0

​

        # drop info from this interface

        # resolv.conf may be a symlink to /tmp/, so take care

        TMPFILE=$(mktemp)

        grep -vE "# $interface\$" $RESOLV_CONF > $TMPFILE

        cat $TMPFILE > $RESOLV_CONF

        rm -f $TMPFILE

​

        if [ -x /usr/sbin/avahi-autoipd ]; then

            /usr/sbin/avahi-autoipd -k $interface

        fi

        ;;

​

    leasefail|nak)

        if [ -x /usr/sbin/avahi-autoipd ]; then

            /usr/sbin/avahi-autoipd -wD $interface --no-chroot

        fi

        ;;

​

    renew|bound)

        if [ -x /usr/sbin/avahi-autoipd ]; then

            /usr/sbin/avahi-autoipd -k $interface

        fi

        /sbin/ifconfig $interface $ip $BROADCAST $NETMASK

​

        if [ -n "$router" ] ; then

            echo "deleting routers"

            while route del default gw 0.0.0.0 dev $interface 2> /dev/null; do

                :

            done

​

            for i in $router ; do

                route add default gw $i dev $interface

            done

        fi

​

        # drop info from this interface

        # resolv.conf may be a symlink to /tmp/, so take care

        TMPFILE=$(mktemp)

        grep -vE "# $interface\$" $RESOLV_CONF > $TMPFILE

        cat $TMPFILE > $RESOLV_CONF

        rm -f $TMPFILE

​

        # prefer rfc3359 domain search list (option 119) if available

        if [ -n "$search" ]; then

            search_list=$search

        elif [ -n "$domain" ]; then

            search_list=$domain