#!/bin/sh # shamelessly stolen from http://www.doit.org/udhcpc/S50default PATH=/bin:/usr/bin:/sbin:/usr/sbin RESOLV_CONF="/etc/resolv.conf" update_interface() { [ -n "$broadcast" ] && BROADCAST="broadcast $broadcast" [ -n "$subnet" ] && NETMASK="netmask $subnet" ifconfig $interface $ip $BROADCAST $NETMASK } update_routes() { if [ -n "$router" ] then echo "deleting routes" while route del default gw 0.0.0.0 dev $interface do : done for i in $router do route add default gw $i dev $interface done fi } update_dns() { echo -n > $RESOLV_CONF [ -n "$domain" ] && echo domain $domain >> $RESOLV_CONF for i in $dns do echo adding dns $i echo nameserver $i >> $RESOLV_CONF done } deconfig() { ifconfig $interface 0.0.0.0 } case "$1" in bound) update_interface; update_routes; update_dns; ;; renew) update_interface; update_routes; update_dns; ;; deconfig) deconfig; ;; *) echo "Usage: $0 {bound|renew|deconfig}" exit 1 ;; esac exit 0