#!/bin/sh # udhcpc script edited by Tim Riker [ -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 $subnet" # Handle stateful DHCPv6 like DHCPv4 [ -n "$ipv6" ] && ip="$ipv6/128" if [ -z "${IF_WAIT_DELAY}" ]; then IF_WAIT_DELAY=10 fi wait_for_ipv6_default_route() { printf "Waiting for IPv6 default route to appear" while [ $IF_WAIT_DELAY -gt 0 ]; do if [ -z "$(ip -6 route list | grep default)" ]; then printf "\n" return fi sleep 1 printf "." : $((IF_WAIT_DELAY -= 1)) done printf " timeout!\n" } 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 -c $interface && /usr/sbin/avahi-autoipd -k $interface fi ;; leasefail|nak) if [ -x /usr/sbin/avahi-autoipd ]; then /usr/sbin/avahi-autoipd -c $interface || /usr/sbin/avahi-autoipd -wD $interface --no-chroot fi ;; renew|bound) if [ -x /usr/sbin/avahi-autoipd ]; then /usr/sbin/avahi-autoipd -c $interface && /usr/sbin/avahi-autoipd -k $interface fi /sbin/ifconfig $interface $ip $BROADCAST $NETMASK if [ -n "$ipv6" ] ; then wait_for_ipv6_default_route fi # RFC3442: If the DHCP server returns both a Classless # Static Routes option and a Router option, the DHCP # client MUST ignore the Router option. if [ -n "$staticroutes" ]; then echo "deleting routers" route -n | while read dest gw mask flags metric ref use iface; do [ "$iface" != "$interface" -o "$gw" = "0.0.0.0" ] || \ route del -net "$dest" netmask "$mask" gw "$gw" dev "$interface" done # format: dest1/mask gw1 ... destn/mask gwn set -- $staticroutes while [ -n "$1" -a -n "$2" ]; do route add -net "$1" gw "$2" dev "$interface" shift 2 done elif [ -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 $TMPFILE # prefer rfc3397 domain search list (option 119) if available if [ -n "$search" ]; then search_list=$search elif [ -n "$domain" ]; then search_list=$domain fi [ -n "$search_list" ] && echo "search $search_list # $interface" >> $RESOLV_CONF for i in $dns ; do echo adding dns $i echo "nameserver $i # $interface" >> $RESOLV_CONF done ;; esac HOOK_DIR="$0.d" for hook in "${HOOK_DIR}/"*; do [ -f "${hook}" -a -x "${hook}" ] || continue "${hook}" "${@}" done exit 0