#!/bin/sh # udhcpc script edited by Tim Riker [ -z "$1" ] && echo "Error: should be called from udhcpc" && exit 1 RESOLV_CONF="/etc/resolv.conf" [ -n "$broadcast" ] && BROADCAST="broadcast $broadcast" [ -n "$subnet" ] && NETMASK="netmask $subnet" # return 0 if root is mounted on a network filesystem root_is_nfs() { grep -qe '^/dev/root.*\(nfs\|smbfs\|ncp\|coda\) .*' /proc/mounts } have_bin_ip=0 if [ -x /bin/ip ]; then have_bin_ip=1 fi case "$1" in deconfig) if [ -x /sbin/resolvconf ]; then /sbin/resolvconf -d "${interface}.udhcpc" fi if ! root_is_nfs ; then if [ $have_bin_ip -eq 1 ]; then ip addr flush dev $interface ip link set dev $interface up else /sbin/ifconfig $interface 0.0.0.0 fi fi ;; renew|bound) if [ $have_bin_ip -eq 1 ]; then ip addr add dev $interface local $ip/$mask $BROADCAST else /sbin/ifconfig $interface $ip $BROADCAST $NETMASK fi if [ -n "$router" ] ; then if ! root_is_nfs ; then if [ $have_bin_ip -eq 1 ]; then while ip route del default 2>/dev/null ; do : done else while route del default gw 0.0.0.0 dev $interface 2>/dev/null ; do : done fi fi metric=0 for i in $router ; do if [ $have_bin_ip -eq 1 ]; then ip route add default via $i metric $metric else route add default gw $i dev $interface metric $metric 2>/dev/null fi metric=$(($metric + 1)) done fi # Update resolver configuration file R="" [ -n "$domain" ] && R="domain $domain " for i in $dns; do echo "$0: Adding DNS $i" R="${R}nameserver $i " done if [ -x /sbin/resolvconf ]; then echo -n "$R" | /sbin/resolvconf -a "${interface}.udhcpc" else echo -n "$R" > "$RESOLV_CONF" fi ;; esac exit 0