567 lines
18 KiB
Plaintext
567 lines
18 KiB
Plaintext
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#!/bin/bash
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# dhclient-script for Linux. Dan Halbert, March, 1997.
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# Updated for Linux 2.[12] by Brian J. Murrell, January 1999.
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# No guarantees about this. I'm a novice at the details of Linux
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# networking.
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# Notes:
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# 0. This script is based on the netbsd script supplied with dhcp-970306.
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# 1. ifconfig down apparently deletes all relevant routes and flushes
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# the arp cache, so this doesn't need to be done explicitly.
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# 2. The alias address handling here has not been tested AT ALL.
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# I'm just going by the doc of modern Linux ip aliasing, which uses
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# notations like eth0:0, eth0:1, for each alias.
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# 3. I have to calculate the network address, and calculate the broadcast
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# address if it is not supplied. This might be much more easily done
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# by the dhclient C code, and passed on.
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if [ -n "${dhc_dbus}" ]; then
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/bin/dbus-send \
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--system \
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--dest=com.redhat.dhcp \
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--type=method_call \
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/com/redhat/dhcp/$interface \
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com.redhat.dhcp.set \
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'string:'"`env | /bin/egrep -v '^(PATH|SHLVL|_|PWD|dhc_dbus)\='`";
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if (( ( dhc_dbus & 31 ) == 31 )); then
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exit 0;
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fi;
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fi;
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function save_previous() {
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if [ -e $1 ]; then
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/bin/mv $1 $1.predhclient
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else
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echo ''> $1.predhclient
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fi
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}
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make_resolv_conf() {
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if [ "${PEERDNS}" == "no" ]; then
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return
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fi
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if [ x$reason == xRENEW ] &&
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[ "$new_domain_name" == "$old_domain_name" ] &&
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[ "$new_domain_name_servers" == "$old_domain_name_servers" ]; then
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return;
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fi
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if [ -n "$new_domain_name" ] || [ -n "$new_domain_name_servers" ]; then
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cp -fp /etc/resolv.conf /etc/resolv.conf.predhclient
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rscf=`mktemp /tmp/XXXXXX`;
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echo '; generated by /sbin/dhclient-script' > $rscf
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if [ -n "$SEARCH" ]; then
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echo search $SEARCH >> $rscf
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else
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if [ -n "$new_domain_name" ]; then
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echo search $new_domain_name >> $rscf
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fi
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fi
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for nameserver in $new_domain_name_servers; do
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echo nameserver $nameserver >> $rscf
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done
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change_resolv_conf $rscf
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rm -f $rscf
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fi
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}
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# Must be used on exit. Invokes the local dhcp client exit hooks, if any.
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exit_with_hooks() {
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exit_status=$1
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if [ -f /etc/dhclient-exit-hooks ]; then
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. /etc/dhclient-exit-hooks
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fi
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# probably should do something with exit status of the local script
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exit $exit_status
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}
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# Invoke the local dhcp client enter hooks, if they exist.
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if [ -f /etc/dhclient-enter-hooks ]; then
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exit_status=0
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. /etc/dhclient-enter-hooks
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# allow the local script to abort processing of this state
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# local script must set exit_status variable to nonzero.
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if [ $exit_status -ne 0 ]; then
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exit $exit_status
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fi
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fi
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# Import Red Hat Linux configuration
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cd /etc/sysconfig/network-scripts;
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. /etc/sysconfig/network-scripts/network-functions
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. /etc/rc.d/init.d/functions
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[ -f ../network ] && . ../network
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[ -f ../networking/network ] && . ../networking/network
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CONFIG=$interface
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need_config ${CONFIG}
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if [ -f "${CONFIG}" ]; then
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source_config
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else
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echo $"$0: configuration for $interface not found. Continuing with defaults." >&2
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fi
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source_config
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release=`uname -r`
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relmajor=`echo $release |/bin/cut -f1 -d'.'`
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relminor=`echo $release |/bin/cut -f2 -d'.'`
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# simple IP arithmetic functions:
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function quad2num()
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{
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if [ $# -eq 4 ]; then
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let n="$1<<24|$2<<16|$3<<8|$4"
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echo $n;
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return 0;
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fi
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echo '0';
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return 1;
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}
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function ip2num()
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{
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IFS='.' quad2num $1;
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}
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function num2ip()
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{
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let n="$1";
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let o1='(n>>24)&0xff';
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let o2='(n>>16)&0xff';
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let o3='(n>>8)&0xff';
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let o4='n & 0xff';
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echo $o1.$o2.$o3.$o4;
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}
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function mask()
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{
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ip=$1
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m=$2
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let ip=`IFS='.' ip2num $ip`;
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let m=`IFS='.' ip2num $m`;
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let n='ip&m';
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num2ip $n;
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}
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function mask_bits()
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{
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ip=$1
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let ip=`IFS='.' ip2num $ip`;
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let bits=0
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for ((bit=1; '((ip&bit)==0) && (bits < 32)'; 'bit<<=1')) do
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let bits+=1
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done
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let n_bits=32-bits
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echo $n_bits
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}
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function class_bits()
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{
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let ip=`IFS='.' ip2num $1`;
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let bits=32
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let mask='255';
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for ((i=0; i <= 3; i++, 'mask<<=8')); do
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let v='ip&mask';
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if [ "$v" -eq 0 ] ; then
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let bits-=8;
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else
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break;
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fi;
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done;
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echo $bits;
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}
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function routerReachable()
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{ # Handle silly DHCP servers that give us a router not on our subnet:
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router=$1
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routerSubnet=`mask $router $new_subnet_mask`
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mySubnet=`mask $new_ip_address $new_subnet_mask`
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unreachable=0
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if [ "$routerSubnet" != "$mySubnet" ]; then
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unreachable=1
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if /sbin/arping -f -q -I $interface -w2 $router; then
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/sbin/ip route add ${router}/32 dev $interface
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if [ $? -eq 0 ]; then
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unreachable=0
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else
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/usr/bin/logger -p local7.notice -t "NET" "dhclient: failed to create host route for unreachable router $router not on subnet $mySubnet";
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fi
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else
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unreachable=1
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if [ -x /usr/bin/logger ]; then
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/usr/bin/logger -p local7.notice -t "NET" "dhclient: DHCP router $router is unreachable on DHCP subnet $mySubnet router subnet $routerSubnet";
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fi;
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fi;
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fi;
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return $unreachable;
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}
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function add_default_gateway()
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{
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router=$1
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metric=''
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if [ $# -gt 1 ] && [ "$2" -gt 0 ]; then
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metric="metric $2";
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fi;
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if routerReachable $router ; then
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/sbin/ip route replace default via $router dev $interface $metric;
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if [ $? -ne 0 ]; then
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/usr/bin/logger -p local7.notice -t "NET" 'dhclient: failed to create default route: '$router dev $interface $metric;
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return 1;
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else
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return 0;
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fi;
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fi;
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return 1;
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}
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function dhconfig()
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{
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if [ -z "${dhc_dbus}" ] || (( ( dhc_dbus & 2 ) != 2 )); then
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if [ x$old_ip_address != x ] && [ x$alias_ip_address != x ] && \
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[ x$alias_ip_address != x$old_ip_address ]; then
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# Possible new alias. Remove old alias.
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ifconfig $interface:0- inet 0
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fi
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if [ x$old_ip_address != x ] && [ x$old_ip_address != x$new_ip_address ]; then
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# IP address changed. Bringing down the interface will delete all routes,
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# and clear the ARP cache.
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ifconfig $interface inet 0 down
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fi
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fi
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if [ x$reason = xBOUND ] || [ x$reason = xREBOOT ] ||
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[ x$old_ip_address != x$new_ip_address ] ||
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[ x$old_subnet_mask != x$new_subnet_mask ] ||
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[ x$new_network_number != x$new_network_number ] ||
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[ x$old_broadcast_address != x$new_broadcast_address ] ||
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[ "x$old_routers" != "x$new_routers" ] ||
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[ x$old_interface_mtu != x$new_interface_mtu ] ; then
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if [ -z "${dhc_dbus}" ] || (( ( dhc_dbus & 2 ) != 2 )); then
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ifconfig $interface inet $new_ip_address $new_subnet_arg \
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$new_broadcast_arg
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if [ -n "$new_interface_mtu" ]; then
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/sbin/ip link set $interface mtu $new_interface_mtu;
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fi;
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if [ -x /etc/dhclient-${interface}-up-hooks ]; then
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. /etc/dhclient-${interface}-up-hooks;
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elif [ -x /etc/dhclient-up-hooks ]; then
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. /etc/dhclient-up-hooks;
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fi;
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fi;
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if [ -z "${dhc_dbus}" ] || (( ( dhc_dbus & 4 ) != 4 )); then
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prefix_bits=`mask_bits $new_subnet_mask`
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# Add a network route to the computed network address.
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if [ $relmajor -lt 2 ] || \
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( [ $relmajor -eq 2 ] && [ $relminor -eq 0 ] ); then
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/sbin/ip route replace ${new_network_number}/${prefix_bits} dev $interface
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if [ $added_old_broadcast_route -eq 1 ]; then
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/sbin/ip route del default;
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fi;
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fi;
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if [[ ( ( -z "$GATEWAYDEV" ) || ( "$GATEWAYDEV" = "$interface" ) ) && ( ( -z "$GATEWAY" ) || ( ( -n "$DHCLIENT_IGNORE_GATEWAY" ) && ( "$DHCLIENT_IGNORE_GATEWAY" = [Yy]* ) ) ) ]]; then
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metric=${METRIC:-''};
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let i=${METRIC:-0};
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default_routers=()
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for router in $new_routers; do
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added_router=0
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for r in ${default_routers[@]}; do
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if [ "$r" == "$router" ]; then
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added_router=1;
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fi;
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done
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if [ -z "$router" ] || [ "$added_router" -eq 1 ] || [ `IFS=. ip2num $router` -le 0 ] || [[ ( "$router" = "$new_broadcast_address" ) && ( "$new_subnet_mask" != "255.255.255.255" ) ]]; then
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continue;
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fi;
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default_routers=(${default_routers[@]} $router)
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add_default_gateway $router $metric;
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let i=i+1;
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metric=$i;
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done
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elif [[ ( ( -z "$GATEWAYDEV" ) || ( "$GATEWAYDEV" = "$interface" ) ) && ( -n "$GATEWAY" ) ]]; then
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routerSubnet=`mask $GATEWAY $new_subnet_mask`
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mySubnet=`mask $new_ip_address $new_subnet_mask`
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if [ "$routerSubnet" = "$mySubnet" ]; then
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/sbin/ip route replace default via $GATEWAY dev $interface
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fi;
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fi;
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# static routes
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if [ "x$new_static_routes" != x ]; then
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IFS=', ' static_routes=($new_static_routes)
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route_targets=()
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for((i=0; i<${#static_routes[@]}; i+=2)); do
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target=${static_routes[$i]}
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gateway=${static_routes[$i+1]}
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metric=''
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for t in ${route_targets[@]}; do
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if [ $t == $target ]; then
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if [ -z "$metric" ]; then
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metric=1;
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else
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((metric=metric+1));
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fi;
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fi;
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done;
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if [ -n "$metric" ]; then
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metric="metric $metric";
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fi;
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if routerReachable $gateway; then
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/sbin/ip route replace ${target}/`class_bits $target` via ${gateway} dev $interface ${metric}
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if [ $? -ne 0 ]; then
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/usr/bin/logger -p local7.notice -t 'NET' 'dhclient: failed to create static route:' ${target}/`class_bits $target` via ${gateway} dev $interface ${metric};
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else
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route_targets=(${route_targets[@]} $target);
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fi;
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fi;
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done
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fi
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fi
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fi
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if [ -z "${dhc_dbus}" ] || (( ( dhc_dbus & 2 ) != 2 )); then
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if [ x$new_ip_address != x$alias_ip_address ] && [ x$alias_ip_address != x ];
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then
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ifconfig $interface:0- inet 0
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ifconfig $interface:0 inet $alias_ip_address $alias_subnet_arg
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/sbin/ip route replace ${alias_ip_address}/32 dev $interface:0
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fi
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fi
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if [ -z "${dhc_dbus}" ] || (( ( dhc_dbus & 1 ) != 1 )); then
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make_resolv_conf
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if [ -n "$new_host_name" ] && need_hostname; then
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hostname $new_host_name
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fi
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fi;
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if [ -z "${dhc_dbus}" ] || (( ( dhc_dbus & 8 ) != 8 )); then
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if [ "${PEERNIS}" = no ]; then
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:
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elif [ -n "$new_nis_domain" ]; then
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domainname "$new_nis_domain"
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save_previous /etc/yp.conf
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let contents=0
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echo '# generated by /sbin/dhclient-script' > /etc/yp.conf
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if [ -n "$new_nis_servers" ]; then
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for I in $new_nis_servers; do
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|
|
echo "domain $new_nis_domain server $I" >> /etc/yp.conf
|
||
|
|
let contents=contents+1
|
||
|
|
done
|
||
|
|
else
|
||
|
|
echo "domain $new_nis_domain broadcast" >> /etc/yp.conf
|
||
|
|
let contents=contents+1
|
||
|
|
fi
|
||
|
|
level=`/sbin/runlevel`
|
||
|
|
level=${level##*\ }
|
||
|
|
if [ "$level" = "unknown" ]; then
|
||
|
|
level=1;
|
||
|
|
fi
|
||
|
|
if [ $contents -gt 0 ] && [[ "$level" = [0-6] ]] && /sbin/chkconfig --level=$level ypbind >/dev/null 2>&1 && [ -r /var/run/ypbind.pid ] && yppid=`cat /var/run/ypbind.pid` && [ -d /proc/${yppid} ] && [ "`if [ -x /sbin/busybox ]; then /sbin/busybox readlink /proc/${yppid}/exe; else echo /sbin/ypbind; fi`" = "/sbin/ypbind" ]; then
|
||
|
|
kill -HUP $yppid;
|
||
|
|
fi
|
||
|
|
elif [ -n "$new_nis_servers" ]; then
|
||
|
|
save_previous /etc/yp.conf
|
||
|
|
echo '# generated by /sbin/dhclient-script' > /etc/yp.conf
|
||
|
|
let contents=0
|
||
|
|
for I in $new_nis_servers; do
|
||
|
|
echo "ypserver $I" >> /etc/yp.conf
|
||
|
|
let contents=contents+1
|
||
|
|
done
|
||
|
|
level=`/sbin/runlevel`
|
||
|
|
level=${level##*\ }
|
||
|
|
if [ "$level" = "unknown" ]; then
|
||
|
|
level=1;
|
||
|
|
fi
|
||
|
|
if [ $contents -gt 0 ] && [[ "$level" = [0-6] ]] && /sbin/chkconfig --level=$level ypbind >/dev/null 2>&1 && [ -r /var/run/ypbind.pid ] && yppid=`cat /var/run/ypbind.pid` && [ -d /proc/${yppid} ] && [ "`if [ -x /sbin/busybox ]; then /sbin/busybox readlink /proc/${yppid}/exe; else echo /sbin/ypbind; fi`" = "/sbin/ypbind" ] ; then
|
||
|
|
kill -HUP $yppid;
|
||
|
|
fi
|
||
|
|
fi
|
||
|
|
fi
|
||
|
|
if [ -z "${dhc_dbus}" ] || (( ( dhc_dbus & 16 ) != 16 )); then
|
||
|
|
if [ -n "$DHCP_TIME_OFFSET_SETS_TIMEZONE" ] && [[ "$DHCP_TIME_OFFSET_SETS_TIMEZONE" = [yY1]* ]]; then
|
||
|
|
if [ -n "$new_time_offset" ]; then
|
||
|
|
# DHCP option "time-offset" is requested by default and should be handled.
|
||
|
|
# The geographical zone abbreviation cannot be determined from the GMT offset,
|
||
|
|
# but the $ZONEINFO/Etc/GMT$offset file can be used - note: this disables DST.
|
||
|
|
((z=new_time_offset/3600));
|
||
|
|
((hoursWest=`printf '%+d' $z`))
|
||
|
|
if (( $hoursWest < 0 )); then
|
||
|
|
# tzdata treats negative 'hours west' as positive 'gmtoff' !
|
||
|
|
((hoursWest*=-1));
|
||
|
|
fi
|
||
|
|
tzfile=/usr/share/zoneinfo/Etc/GMT`printf '%+d' $hoursWest`;
|
||
|
|
if [ -e $tzfile ]; then
|
||
|
|
/bin/mv -f /etc/localtime /etc/localtime.predhclient;
|
||
|
|
/bin/cp -fp $tzfile /etc/localtime;
|
||
|
|
/bin/touch /etc/localtime;
|
||
|
|
fi;
|
||
|
|
fi;
|
||
|
|
fi;
|
||
|
|
if [ "${PEERNTP}" = no ]; then
|
||
|
|
:
|
||
|
|
elif [ -n "$new_ntp_servers" ] && [ -e /etc/ntp.conf ]; then
|
||
|
|
save_previous /etc/ntp.conf
|
||
|
|
/bin/egrep -v '(^[\ \ ]*(server|fudge))|(generated by /sbin/dhclient-script)'< /etc/ntp.conf.predhclient > /etc/ntp.conf
|
||
|
|
echo '# servers generated by /sbin/dhclient-script' >> /etc/ntp.conf
|
||
|
|
localClocks=(`/bin/egrep '^[\ \ ]*server[\ \ ]+127\.127' /etc/ntp.conf.predhclient | while read s addr rest; do echo $addr; done`)
|
||
|
|
localClockFudge="`/bin/egrep '^[\ \ ]*fudge[\ \ ]+127\.127' /etc/ntp.conf.predhclient`";
|
||
|
|
for s in $new_ntp_servers ${localClocks[@]};
|
||
|
|
do
|
||
|
|
echo 'server '$s >> /etc/ntp.conf;
|
||
|
|
done
|
||
|
|
echo "$localClockFudge" >> /etc/ntp.conf;
|
||
|
|
if [ -x /usr/bin/diff ] && /usr/bin/diff -q /etc/ntp.conf /etc/ntp.conf.predhclient >/dev/null 2>&1; then
|
||
|
|
: ;
|
||
|
|
else
|
||
|
|
/sbin/service ntpd condrestart >/dev/null 2>&1
|
||
|
|
fi;
|
||
|
|
fi
|
||
|
|
fi;
|
||
|
|
}
|
||
|
|
|
||
|
|
if [ x$new_broadcast_address != x ] && [ x$new_subnet_mask != x ] && [ "$new_subnet_mask" != "255.255.255.255" ]; then
|
||
|
|
new_broadcast_arg="broadcast $new_broadcast_address"
|
||
|
|
fi
|
||
|
|
if [ x$old_broadcast_address != x ]; then
|
||
|
|
old_broadcast_arg="broadcast $old_broadcast_address"
|
||
|
|
fi
|
||
|
|
if [ x$new_subnet_mask != x ]; then
|
||
|
|
new_subnet_arg="netmask $new_subnet_mask"
|
||
|
|
fi
|
||
|
|
if [ x$old_subnet_mask != x ]; then
|
||
|
|
old_subnet_arg="netmask $old_subnet_mask"
|
||
|
|
fi
|
||
|
|
if [ x$alias_subnet_mask != x ]; then
|
||
|
|
alias_subnet_arg="netmask $alias_subnet_mask"
|
||
|
|
fi
|
||
|
|
|
||
|
|
if [ x$reason = xMEDIUM ]; then
|
||
|
|
# Linux doesn't do mediums (ok, ok, media).
|
||
|
|
exit_with_hooks 0
|
||
|
|
fi
|
||
|
|
|
||
|
|
added_old_broadcast_route=0;
|
||
|
|
if [ x$reason = xPREINIT ]; then
|
||
|
|
if [ -z "${dhc_dbus}" ] || (( ( dhc_dbus & 2 ) != 2 )); then
|
||
|
|
if [ x$alias_ip_address != x ]; then
|
||
|
|
# Bring down alias interface. Its routes will disappear too.
|
||
|
|
ifconfig $interface:0- inet 0
|
||
|
|
fi
|
||
|
|
if [ x$keep_old_ip = xyes ]; then
|
||
|
|
ifconfig $interface up
|
||
|
|
elif [ $relmajor -lt 2 ] || ( [ $relmajor -eq 2 ] && [ $relminor -eq 0 ] ) then
|
||
|
|
ifconfig $interface inet 0.0.0.0 netmask 0.0.0.0 \
|
||
|
|
broadcast 255.255.255.255 up
|
||
|
|
# Add route to make broadcast work. Do not omit netmask.
|
||
|
|
/sbin/ip route replace default dev $interface && added_old_broadcast_route=1;
|
||
|
|
else
|
||
|
|
ifconfig $interface 0 up
|
||
|
|
fi
|
||
|
|
|
||
|
|
# We need to give the kernel some time to get the interface up.
|
||
|
|
# sleep 1
|
||
|
|
# I don't think this is necessary with modern kernels - no problems found during testing -
|
||
|
|
# JVD, 2005-06-17
|
||
|
|
# but just in case:
|
||
|
|
if [ -n "$DHCLIENT_DELAY" ] && [ "$DHCLIENT_DELAY" -gt 0 ] ; then
|
||
|
|
sleep $DHCLIENT_DELAY;
|
||
|
|
fi;
|
||
|
|
exit_with_hooks 0
|
||
|
|
fi;
|
||
|
|
fi
|
||
|
|
|
||
|
|
if [ x$reason = xARPCHECK ] || [ x$reason = xARPSEND ]; then
|
||
|
|
if [ -z "$new_ip_address" ] || [ -z "$interface" ] || /sbin/arping -q -f -c 2 -w 3 -D -I ${interface} ${new_ip_address}; then
|
||
|
|
exit_with_hooks 0
|
||
|
|
else
|
||
|
|
exit_with_hooks 1
|
||
|
|
fi;
|
||
|
|
fi
|
||
|
|
|
||
|
|
if [ x$reason = xBOUND ] || [ x$reason = xRENEW ] || \
|
||
|
|
[ x$reason = xREBIND ] || [ x$reason = xREBOOT ]; then
|
||
|
|
dhconfig ;
|
||
|
|
exit_with_hooks 0
|
||
|
|
fi
|
||
|
|
|
||
|
|
if [ x$reason = xEXPIRE ] || [ x$reason = xFAIL ] || [ x$reason = xRELEASE ] \
|
||
|
|
|| [ x$reason = xSTOP ]; then
|
||
|
|
if [ -f /etc/resolv.conf.predhclient ]; then
|
||
|
|
change_resolv_conf /etc/resolv.conf.predhclient
|
||
|
|
rm -f /etc/resolv.conf.predhclient
|
||
|
|
fi
|
||
|
|
if [ -n "$DHCP_TIME_OFFSET_SETS_TIMEZONE" ] && [[ "$DHCP_TIME_OFFSET_SETS_TIMEZONE" = [yY1]* ]]; then
|
||
|
|
if [ -e /etc/localtime.predhclient ]; then
|
||
|
|
/bin/rm -f /etc/localtime
|
||
|
|
/bin/mv -f /etc/localtime.predhclient /etc/localtime;
|
||
|
|
/bin/touch /etc/localtime;
|
||
|
|
fi;
|
||
|
|
fi;
|
||
|
|
if [ -f /etc/ntp.conf.predhclient ]; then
|
||
|
|
/bin/rm -f /etc/ntp.conf
|
||
|
|
/bin/mv -f /etc/ntp.conf.predhclient /etc/ntp.conf
|
||
|
|
service ntpd condrestart >/dev/null 2>&1
|
||
|
|
fi
|
||
|
|
if [ -f /etc/yp.conf.predhclient ]; then
|
||
|
|
/bin/rm -f /etc/yp.conf
|
||
|
|
/bin/mv -f /etc/yp.conf.predhclient /etc/yp.conf
|
||
|
|
level=`/sbin/runlevel`
|
||
|
|
level=${level##*\ }
|
||
|
|
if [ "$level" = "unknown" ]; then
|
||
|
|
level=1;
|
||
|
|
fi
|
||
|
|
if [[ "$level" = [0-6] ]] && /sbin/chkconfig --level=$level ypbind >/dev/null 2>&1 && [ -r /var/run/ypbind.pid ] && yppid=`cat /var/run/ypbind.pid` && [ -d /proc/${yppid} ] && [ "`if [ -x /sbin/busybox ]; then /sbin/busybox readlink /proc/${yppid}/exe; else echo /sbin/ypbind; fi`" = "/sbin/ypbind" ] ; then
|
||
|
|
kill -HUP $yppid;
|
||
|
|
fi
|
||
|
|
fi
|
||
|
|
if [ -x /etc/dhclient-${interface}-down-hooks ]; then
|
||
|
|
. /etc/dhclient-${interface}-down-hooks;
|
||
|
|
elif [ -x /etc/dhclient-down-hooks ]; then
|
||
|
|
. /etc/dhclient-down-hooks;
|
||
|
|
fi;
|
||
|
|
if [ x$alias_ip_address != x ]; then
|
||
|
|
# Turn off alias interface.
|
||
|
|
ifconfig $interface:0- inet 0
|
||
|
|
fi
|
||
|
|
if [ x$old_ip_address != x ]; then
|
||
|
|
# Shut down interface, which will delete routes and clear arp cache.
|
||
|
|
ifconfig $interface inet 0 down
|
||
|
|
fi
|
||
|
|
if [ x$alias_ip_address != x ]; then
|
||
|
|
ifconfig $interface:0 inet $alias_ip_address $alias_subnet_arg
|
||
|
|
/sbin/ip route replace ${alias_ip_address}/32 $interface:0
|
||
|
|
fi
|
||
|
|
exit_with_hooks 0
|
||
|
|
fi
|
||
|
|
|
||
|
|
if [ x$reason = xTIMEOUT ] && [ "x$new_routers" != 'x' ]; then
|
||
|
|
if [ -z "${dhc_dbus}" ] || (( ( dhc_dbus & 2 ) != 2 )); then
|
||
|
|
if [ x$alias_ip_address != x ]; then
|
||
|
|
ifconfig $interface:0- inet 0
|
||
|
|
fi
|
||
|
|
ifconfig $interface inet $new_ip_address $new_subnet_arg \
|
||
|
|
$new_broadcast_arg
|
||
|
|
fi;
|
||
|
|
set $new_routers
|
||
|
|
if ping -q -c 1 -w 10 -I $interface $1; then
|
||
|
|
dhconfig ;
|
||
|
|
exit_with_hooks 0
|
||
|
|
fi
|
||
|
|
if [ -z "${dhc_dbus}" ] || (( ( dhc_dbus & 2 ) != 2 )); then
|
||
|
|
ifconfig $interface inet 0 down
|
||
|
|
fi;
|
||
|
|
exit_with_hooks 1
|
||
|
|
elif [ x$reason = xTIMEOUT ]; then
|
||
|
|
exit_with_hooks 1
|
||
|
|
fi
|
||
|
|
exit_with_hooks 0
|