3
# $Id: freebsd,v 1.22 2008/05/23 13:56:07 fdupont Exp $
7
if [ -x /usr/bin/logger ]; then
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LOGGER="/usr/bin/logger -s -p user.notice -t dhclient"
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if [ x"$new_domain_name_servers" != x ]; then
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( cat /dev/null > /etc/resolv.conf.dhclient )
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if [ $exit_status -ne 0 ]; then
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$LOGGER "Unable to create /etc/resolv.conf.dhclient: Error $exit_status"
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if [ "x$new_domain_search" != x ]; then
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( echo search $new_domain_search >> /etc/resolv.conf.dhclient )
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elif [ "x$new_domain_name" != x ]; then
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# Note that the DHCP 'Domain Name Option' is really just a domain
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# name, and that this practice of using the domain name option as
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# a search path is both nonstandard and deprecated.
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( echo search $new_domain_name >> /etc/resolv.conf.dhclient )
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for nameserver in $new_domain_name_servers; do
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if [ $exit_status -ne 0 ]; then
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( echo nameserver $nameserver >>/etc/resolv.conf.dhclient )
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# If there were no errors, attempt to mv the new file into place.
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if [ $exit_status -eq 0 ]; then
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( mv /etc/resolv.conf.dhclient /etc/resolv.conf )
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if [ $exit_status -ne 0 ]; then
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$LOGGER "Error while writing new /etc/resolv.conf."
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elif [ "x${new_dhcp6_name_servers}" != x ] ; then
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( cat /dev/null > /etc/resolv.conf.dhclient6 )
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if [ $exit_status -ne 0 ] ; then
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$LOGGER "Unable to create /etc/resolv.conf.dhclient6: Error $exit_status"
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if [ "x${new_dhcp6_domain_search}" != x ] ; then
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( echo search ${new_dhcp6_domain_search} >> /etc/resolv.conf.dhclient6 )
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for nameserver in ${new_dhcp6_name_servers} ; do
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if [ $exit_status -ne 0 ] ; then
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( echo nameserver ${nameserver} >> /etc/resolv.conf.dhclient6 )
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if [ $exit_status -eq 0 ] ; then
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( mv /etc/resolv.conf.dhclient6 /etc/resolv.conf )
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if [ $exit_status -ne 0 ] ; then
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$LOGGER "Error while writing new /etc/resolv.conf."
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# Must be used on exit. Invokes the local dhcp client exit hooks, if any.
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if [ -f /etc/dhclient-exit-hooks ]; then
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. /etc/dhclient-exit-hooks
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# probably should do something with exit status of the local script
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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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. /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 [ $exit_status -ne 0 ]; then
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if [ x$new_network_number != x ]; then
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$LOGGER New Network Number: $new_network_number
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if [ x$new_broadcast_address != x ]; then
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$LOGGER New Broadcast Address: $new_broadcast_address
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new_broadcast_arg="broadcast $new_broadcast_address"
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if [ x$old_broadcast_address != x ]; then
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old_broadcast_arg="broadcast $old_broadcast_address"
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if [ x$new_subnet_mask != x ]; then
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new_netmask_arg="netmask $new_subnet_mask"
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if [ x$old_subnet_mask != x ]; then
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old_netmask_arg="netmask $old_subnet_mask"
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if [ x$alias_subnet_mask != x ]; then
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alias_subnet_arg="netmask $alias_subnet_mask"
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if [ x$reason = xMEDIUM ]; then
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eval "ifconfig $interface $medium"
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eval "ifconfig $interface inet -alias 0.0.0.0 $medium" >/dev/null 2>&1
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if [ x$reason = xPREINIT ]; then
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if [ x$alias_ip_address != x ]; then
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ifconfig $interface inet -alias $alias_ip_address > /dev/null 2>&1
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route delete $alias_ip_address 127.0.0.1 > /dev/null 2>&1
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ifconfig $interface inet 0.0.0.0 netmask 0.0.0.0 \
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broadcast 255.255.255.255 up
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if [ x$reason = xARPCHECK ] || [ x$reason = xARPSEND ]; then
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if [ x$reason = xBOUND ] || [ x$reason = xRENEW ] || \
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[ x$reason = xREBIND ] || [ x$reason = xREBOOT ]; then
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current_hostname=`/bin/hostname`
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if [ x$current_hostname = x ] || \
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[ x$current_hostname = x$old_host_name ]; then
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if [ x$current_hostname = x ] || \
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[ x$new_host_name != x$old_host_name ]; then
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$LOGGER "New Hostname: $new_host_name"
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hostname $new_host_name
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if [ x$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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ifconfig $interface inet -alias $alias_ip_address > /dev/null 2>&1
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route delete $alias_ip_address 127.0.0.1 > /dev/null 2>&1
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if [ x$old_ip_address != x ] && [ x$old_ip_address != x$new_ip_address ]
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eval "ifconfig $interface inet -alias $old_ip_address $medium"
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route delete $old_ip_address 127.1 >/dev/null 2>&1
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for router in $old_routers; do
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route delete default $router >/dev/null 2>&1
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if [ -n "$old_static_routes" ]; then
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set -- $old_static_routes
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while [ $# -gt 1 ]; do
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arp -n -a | sed -n -e 's/^.*(\(.*\)) at .*$/arp -d \1/p' |sh
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if [ x$old_ip_address = x ] || [ x$old_ip_address != x$new_ip_address ] || \
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[ x$reason = xBOUND ] || [ x$reason = xREBOOT ]; then
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eval "ifconfig $interface inet $new_ip_address $new_netmask_arg \
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$new_broadcast_arg $medium"
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$LOGGER "New IP Address ($interface): $new_ip_address"
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$LOGGER "New Subnet Mask ($interface): $new_subnet_mask"
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$LOGGER "New Broadcast Address ($interface): $new_broadcast_address"
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if [ -n "$new_routers" ]; then
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$LOGGER "New Routers: $new_routers"
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route add $new_ip_address 127.1 >/dev/null 2>&1
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for router in $new_routers; do
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# If the subnet is captive, eg the netmask is /32 but the default
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# gateway is (obviously) outside of this, then we need to produce a
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# host route to reach the gateway.
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if [ "x$new_subnet_mask" = "x255.255.255.255" ] ; then
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route add -host $router -interface $interface
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route add default $router >/dev/null 2>&1
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if [ -n "$new_static_routes" ]; then
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$LOGGER "New Static Routes: $new_static_routes"
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set -- $new_static_routes
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while [ $# -gt 1 ]; do
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if [ x$new_ip_address != x$alias_ip_address ] && [ x$alias_ip_address != x ];
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ifconfig $interface inet alias $alias_ip_address $alias_subnet_arg
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route add $alias_ip_address 127.0.0.1
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if [ x$reason = xEXPIRE ] || [ x$reason = xFAIL ] || [ x$reason = xRELEASE ] \
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|| [ x$reason = xSTOP ]; then
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if [ x$alias_ip_address != x ]; then
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ifconfig $interface inet -alias $alias_ip_address > /dev/null 2>&1
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route delete $alias_ip_address 127.0.0.1 > /dev/null 2>&1
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if [ x$old_ip_address != x ]; then
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eval "ifconfig $interface inet -alias $old_ip_address $medium"
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route delete $old_ip_address 127.1 >/dev/null 2>&1
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for router in $old_routers; do
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route delete default $router >/dev/null 2>&1
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if [ -n "$old_static_routes" ]; then
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set -- $old_static_routes
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while [ $# -gt 1 ]; do
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arp -n -a | sed -n -e 's/^.*(\(.*\)) at .*$/arp -d \1/p' \
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if [ x$alias_ip_address != x ]; then
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ifconfig $interface inet alias $alias_ip_address $alias_subnet_arg
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route add $alias_ip_address 127.0.0.1
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if [ x$reason = xTIMEOUT ]; then
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if [ x$alias_ip_address != x ]; then
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ifconfig $interface inet -alias $alias_ip_address > /dev/null 2>&1
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route delete $alias_ip_address 127.0.0.1 > /dev/null 2>&1
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eval "ifconfig $interface inet $new_ip_address $new_netmask_arg \
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$new_broadcast_arg $medium"
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$LOGGER "New IP Address ($interface): $new_ip_address"
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$LOGGER "New Subnet Mask ($interface): $new_subnet_mask"
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$LOGGER "New Broadcast Address ($interface): $new_broadcast_address"
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if [ -n "$new_routers" ]; then
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$LOGGER "New Routers: $new_routers"
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if ping -q -c 1 $1; then
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if [ x$new_ip_address != x$alias_ip_address ] && \
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[ x$alias_ip_address != x ]; then
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ifconfig $interface inet alias $alias_ip_address $alias_subnet_arg
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route add $alias_ip_address 127.0.0.1
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route add $new_ip_address 127.1 >/dev/null 2>&1
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for router in $new_routers; do
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if [ "x$new_subnet_mask" = "x255.255.255.255" ] ; then
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route add -host $router -interface $interface
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route add default $router >/dev/null 2>&1
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set -- $new_static_routes
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while [ $# -gt 1 ]; do
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eval "ifconfig $interface inet -alias $new_ip_address $medium"
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for router in $old_routers; do
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route delete default $router >/dev/null 2>&1
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if [ -n "$old_static_routes" ]; then
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set -- $old_static_routes
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while [ $# -gt 1 ]; do
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arp -n -a | sed -n -e 's/^.*(\(.*\)) at .*$/arp -d \1/p' \
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if [ ${reason} = PREINIT6 ] ; then
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# Ensure interface is up.
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ifconfig ${interface} up
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# XXX: Remove any stale addresses from aborted clients.
309
if [ x${old_ip6_prefix} != x ] || [ x${new_ip6_prefix} != x ] ; then
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echo Prefix ${reason} old=${old_ip6_prefix} new=${new_ip6_prefix}
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if [ ${reason} = BOUND6 ] ; then
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if [ x${new_ip6_address} = x ] || [ x${new_ip6_prefixlen} = x ] ; then
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ifconfig ${interface} inet6 ${new_ip6_address}/${new_ip6_prefixlen} alias
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# Check for nameserver options.
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if [ ${reason} = RENEW6 ] || [ ${reason} = REBIND6 ] ; then
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# Make sure nothing has moved around on us.
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# Nameservers/domains/etc.
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if [ "x${new_dhcp6_name_servers}" != "x${old_dhcp6_name_servers}" ] ||
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[ "x${new_dhcp6_domain_search}" != "x${old_dhcp6_domain_search}" ] ; then
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if [ ${reason} = DEPREF6 ] ; then
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if [ x${new_ip6_address} = x ] ; then
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ifconfig ${interface} inet6 ${new_ip6_address} deprecated
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if [ ${reason} = EXPIRE6 -o ${reason} = RELEASE6 -o ${reason} = STOP6 ] ; then
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if [ x${old_ip6_address} = x ] || [ x${old_ip6_prefixlen} = x ] ; then
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ifconfig ${interface} inet6 ${old_ip6_address}/${old_ip6_prefixlen} -alias
added
removed
client/scripts/freebsd
