[lfs-patches] r2967 - trunk/dhcp

igor at higgs.linuxfromscratch.org igor at higgs.linuxfromscratch.org
Thu Jul 31 14:01:47 PDT 2014


Author: igor
Date: Thu Jul 31 14:01:47 2014
New Revision: 2967

Log:
dhcp client script doesn't need bash

Added:
   trunk/dhcp/dhcp-4.3.0-client_script-2.patch

Added: trunk/dhcp/dhcp-4.3.0-client_script-2.patch
==============================================================================
--- /dev/null	00:00:00 1970	(empty, because file is newly added)
+++ trunk/dhcp/dhcp-4.3.0-client_script-2.patch	Thu Jul 31 14:01:47 2014	(r2967)
@@ -0,0 +1,650 @@
+Submitted By:            Armin K. <krejzi at email dot com>
+Date:                    2012-08-14
+Initial Package Version: 4.2.4-P1
+Upstream Status:         Rejected by upstream.
+Origin:                  Based on Debian's dhclient-script, but modified for BLFS
+Description:             This patch replaces original linux script for dhcp client with
+                         better one which is based on Debian's dhclient-script, but modified
+                         to be used on LFS/BLFS. It also removes net-tools and bash
+                         dependencies.
+
+diff -Naur dhcp-4.3.0.orig/client/scripts/linux dhcp-4.3.0/client/scripts/linux
+--- dhcp-4.3.0.orig/client/scripts/linux	2013-11-02 01:44:36.000000000 +0100
++++ dhcp-4.3.0/client/scripts/linux	2014-07-31 22:58:53.443382078 +0200
+@@ -1,318 +1,346 @@
+-#!/bin/bash
++#!/bin/sh
++
+ # dhclient-script for Linux. Dan Halbert, March, 1997.
+ # Updated for Linux 2.[12] by Brian J. Murrell, January 1999.
+-# No guarantees about this. I'm a novice at the details of Linux
+-# networking.
+-
+-# Notes:
+-
+-# 0. This script is based on the netbsd script supplied with dhcp-970306.
+-
+-# 1. ifconfig down apparently deletes all relevant routes and flushes
+-# the arp cache, so this doesn't need to be done explicitly.
+-
+-# 2. The alias address handling here has not been tested AT ALL.
+-# I'm just going by the doc of modern Linux ip aliasing, which uses
+-# notations like eth0:0, eth0:1, for each alias.
++# Modified for Debian.  Matt Zimmerman and Eloy Paris, December 2003
++# Modified to remove useless tests for antiquated kernel versions that
++# this doesn't even work with anyway, and introduces a dependency on /usr
++# being mounted, which causes cosmetic errors on hosts that NFS mount /usr
++# Andrew Pollock, February 2005
++# Modified to work on point-to-point links. Andrew Pollock, June 2005
++# Modified to support passing the parameters called with to the hooks. Andrew Pollock, November 2005
++# Modified to use the script with Linux From Scratch by Armin K., May 2012
+ 
+-# 3. I have to calculate the network address, and calculate the broadcast
+-# address if it is not supplied. This might be much more easily done
+-# by the dhclient C code, and passed on.
+-
+-# 4. TIMEOUT not tested. ping has a flag I don't know, and I'm suspicious
+-# of the $1 in its args.
+-
+-# 'ip' just looks too weird.  /sbin/ip looks less weird.
+-ip=/sbin/ip
++# The alias handling in here probably still sucks. -mdz
+ 
++# update /etc/resolv.conf based on received values
+ make_resolv_conf() {
+-  if [ x"$new_domain_name_servers" != x ]; then
+-    cat /dev/null > /etc/resolv.conf.dhclient
+-    chmod 644 /etc/resolv.conf.dhclient
+-    if [ x"$new_domain_search" != x ]; then
+-      echo search $new_domain_search >> /etc/resolv.conf.dhclient
+-    elif [ x"$new_domain_name" != x ]; then
+-      # Note that the DHCP 'Domain Name Option' is really just a domain
+-      # name, and that this practice of using the domain name option as
+-      # a search path is both nonstandard and deprecated.
+-      echo search $new_domain_name >> /etc/resolv.conf.dhclient
+-    fi
+-    for nameserver in $new_domain_name_servers; do
+-      echo nameserver $nameserver >>/etc/resolv.conf.dhclient
+-    done
+-
+-    mv /etc/resolv.conf.dhclient /etc/resolv.conf
+-  elif [ "x${new_dhcp6_name_servers}" != x ] ; then
+-    cat /dev/null > /etc/resolv.conf.dhclient6
+-    chmod 644 /etc/resolv.conf.dhclient6
++    local new_resolv_conf
+ 
+-    if [ "x${new_dhcp6_domain_search}" != x ] ; then
+-      echo search ${new_dhcp6_domain_search} >> /etc/resolv.conf.dhclient6
++    # DHCPv4
++    if [ -n "$new_domain_search" ] || [ -n "$new_domain_name" ] ||
++       [ -n "$new_domain_name_servers" ]; then
++        new_resolv_conf=/etc/resolv.conf.dhclient-new
++        rm -f $new_resolv_conf
++
++        if [ -n "$new_domain_name" ]; then
++            echo domain ${new_domain_name%% *} >>$new_resolv_conf
++        fi
++
++        if [ -n "$new_domain_search" ]; then
++            if [ -n "$new_domain_name" ]; then
++                domain_in_search_list=""
++                for domain in $new_domain_search; do
++                    if [ "$domain" = "${new_domain_name}" ] ||
++                       [ "$domain" = "${new_domain_name}." ]; then
++                        domain_in_search_list="Yes"
++                    fi
++                done
++                if [ -z "$domain_in_search_list" ]; then
++                    new_domain_search="$new_domain_name $new_domain_search"
++                fi
++            fi
++            echo "search ${new_domain_search}" >> $new_resolv_conf
++        elif [ -n "$new_domain_name" ]; then
++            echo "search ${new_domain_name}" >> $new_resolv_conf
++        fi
++
++        if [ -n "$new_domain_name_servers" ]; then
++            for nameserver in $new_domain_name_servers; do
++                echo nameserver $nameserver >>$new_resolv_conf
++            done
++        else # keep 'old' nameservers
++            sed -n /^\w*[Nn][Aa][Mm][Ee][Ss][Ee][Rr][Vv][Ee][Rr]/p /etc/resolv.conf >>$new_resolv_conf
++        fi
++
++        chown root.root $new_resolv_conf
++        chmod 644 $new_resolv_conf
++        mv -f $new_resolv_conf /etc/resolv.conf
++    # DHCPv6
++    elif [ -n "$new_dhcp6_domain_search" ] || [ -n "$new_dhcp6_name_servers" ]; then
++        new_resolv_conf=/etc/resolv.conf.dhclient-new
++        rm -f $new_resolv_conf
++
++        if [ -n "$new_dhcp6_domain_search" ]; then
++            echo "search ${new_dhcp6_domain_search}" >> $new_resolv_conf
++        fi
++
++        if [ -n "$new_dhcp6_name_servers" ]; then
++            for nameserver in $new_dhcp6_name_servers; do
++                # append %interface to link-local-address nameservers
++                if [ "${nameserver##fe80::}" != "$nameserver" ] ||
++                   [ "${nameserver##FE80::}" != "$nameserver" ]; then
++                    nameserver="${nameserver}%${interface}"
++                fi
++                echo nameserver $nameserver >>$new_resolv_conf
++            done
++        else # keep 'old' nameservers
++            sed -n /^\w*[Nn][Aa][Mm][Ee][Ss][Ee][Rr][Vv][Ee][Rr]/p /etc/resolv.conf >>$new_resolv_conf
++        fi
++
++        chown root.root $new_resolv_conf
++        chmod 644 $new_resolv_conf
++        mv -f $new_resolv_conf /etc/resolv.conf
+     fi
+-    shopt -s nocasematch 
+-    for nameserver in ${new_dhcp6_name_servers} ; do
+-      # If the nameserver has a link-local address
+-      # add a <zone_id> (interface name) to it.
+-      if  [[ "$nameserver" =~ ^fe80:: ]]
+-      then
+-	zone_id="%$interface"
+-      else
+-	zone_id=
+-      fi
+-      echo nameserver ${nameserver}$zone_id >> /etc/resolv.conf.dhclient6
+-    done
+-    shopt -u nocasematch 
++}
+ 
+-    mv /etc/resolv.conf.dhclient6 /etc/resolv.conf
+-  fi
++# set host name
++set_hostname() {
++    local current_hostname
++
++    if [ -n "$new_host_name" ]; then
++        current_hostname=$(hostname)
++
++        # current host name is empty, '(none)' or 'localhost' or differs from new one from DHCP
++        if [ -z "$current_hostname" ] ||
++           [ "$current_hostname" = '(none)' ] ||
++           [ "$current_hostname" = 'localhost' ] ||
++           [ "$current_hostname" = "$old_host_name" ]; then
++           if [ "$new_host_name" != "$old_host_name" ]; then
++               hostname "$new_host_name"
++           fi
++        fi
++    fi
+ }
+ 
+-# Must be used on exit.   Invokes the local dhcp client exit hooks, if any.
++# Must be used on exit. Invokes the local dhcp client exit hooks, if any.
+ exit_with_hooks() {
+   exit_status=$1
+-  if [ -f /etc/dhclient-exit-hooks ]; then
+-    . /etc/dhclient-exit-hooks
++  if [ -f /etc/dhcp/dhclient-exit-hooks ]; then
++    . /etc/dhcp/dhclient-exit-hooks
+   fi
+-# probably should do something with exit status of the local script
+   exit $exit_status
+ }
+ 
++# The 576 MTU is only used for X.25 and dialup connections
++# where the admin wants low latency.  Such a low MTU can cause
++# problems with UDP traffic, among other things.  As such,
++# disallow MTUs from 576 and below by default, so that broken
++# MTUs are ignored, but higher stuff is allowed (1492, 1500, etc).
++if [ -z "$new_interface_mtu" ] || [ "$new_interface_mtu" -le 576 ]; then
++    new_interface_mtu=''
++fi
++
++# The action starts here
++
+ # Invoke the local dhcp client enter hooks, if they exist.
+-if [ -f /etc/dhclient-enter-hooks ]; then
++if [ -f /etc/dhcp/dhclient-enter-hooks ]; then
+   exit_status=0
+-  . /etc/dhclient-enter-hooks
+-  # allow the local script to abort processing of this state
+-  # local script must set exit_status variable to nonzero.
++  . /etc/dhcp/dhclient-enter-hooks
+   if [ $exit_status -ne 0 ]; then
+     exit $exit_status
+   fi
+ fi
+ 
+-###
+-### DHCPv4 Handlers
+-###
+-
+-if [ x$new_broadcast_address != x ]; 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 $alias_subnet_mask"
+-fi
+-if [ x$new_interface_mtu != x ]; then
+-  mtu_arg="mtu $new_interface_mtu"
+-fi
+-if [ x$IF_METRIC != x ]; then
+-  metric_arg="metric $IF_METRIC"
+-fi
+-
+-if [ x$reason = xMEDIUM ]; then
+-  # Linux doesn't do mediums (ok, ok, media).
+-  exit_with_hooks 0
+-fi
+-
+-if [ x$reason = xPREINIT ]; then
+-  if [ x$alias_ip_address != x ]; then
+-    # Bring down alias interface. Its routes will disappear too.
+-    ifconfig $interface:0- inet 0
+-  fi
+-  ifconfig $interface 0 up
+-
+-  # We need to give the kernel some time to get the interface up.
+-  sleep 1
+-
+-  exit_with_hooks 0
+-fi
+-
+-if [ x$reason = xARPCHECK ] || [ x$reason = xARPSEND ]; then
+-  exit_with_hooks 0
+-fi
+-  
+-if [ x$reason = xBOUND ] || [ x$reason = xRENEW ] || \
+-   [ x$reason = xREBIND ] || [ x$reason = xREBOOT ]; then
+-  current_hostname=`hostname`
+-  if [ x$current_hostname = x ] || \
+-     [ x$current_hostname = "x(none)" ] || \
+-     [ x$current_hostname = xlocalhost ] || \
+-     [ x$current_hostname = x$old_host_name ]; then
+-    if [ x$new_host_name != x$old_host_name ]; then
+-      hostname "$new_host_name"
+-    fi
+-  fi
+-    
+-  if [ x$old_ip_address != x ] && [ x$alias_ip_address != x ] && \
+-		[ x$alias_ip_address != x$old_ip_address ]; then
+-    # Possible new alias. Remove old alias.
+-    ifconfig $interface:0- inet 0
+-  fi
+-  if [ x$old_ip_address != x ] && [ x$old_ip_address != x$new_ip_address ]; then
+-    # IP address changed. Bringing down the interface will delete all routes,
+-    # and clear the ARP cache.
+-    ifconfig $interface inet 0 down
++# Execute the operation
++case "$reason" in
+ 
+-  fi
+-  if [ x$old_ip_address = x ] || [ x$old_ip_address != x$new_ip_address ] || \
+-     [ x$reason = xBOUND ] || [ x$reason = xREBOOT ]; then
++    ### DHCPv4 Handlers
+ 
+-    ifconfig $interface inet $new_ip_address $new_subnet_arg \
+-					$new_broadcast_arg $mtu_arg
+-    # Add a network route to the computed network address.
+-    for router in $new_routers; do
+-      if [ "x$new_subnet_mask" = "x255.255.255.255" ] ; then
+-	route add -host $router dev $interface
+-      fi
+-      route add default gw $router $metric_arg dev $interface
+-    done
+-  else
+-    # we haven't changed the address, have we changed other options           
+-    # that we wish to update?
+-    if [ x$new_routers != x ] && [ x$new_routers != x$old_routers ] ; then
+-      # if we've changed routers delete the old and add the new.
+-      for router in $old_routers; do
+-        route del default gw $router
+-      done
+-      for router in $new_routers; do
+-        if [ "x$new_subnet_mask" = "x255.255.255.255" ] ; then
+-	  route add -host $router dev $interface
+-	fi
+-	route add default gw $router $metric_arg dev $interface
+-      done
+-    fi
+-  fi
+-  if [ x$new_ip_address != x$alias_ip_address ] && [ x$alias_ip_address != x ];
+-   then
+-    ifconfig $interface:0- inet 0
+-    ifconfig $interface:0 inet $alias_ip_address $alias_subnet_arg
+-    route add -host $alias_ip_address $interface:0
+-  fi
+-  make_resolv_conf
+-  exit_with_hooks 0
+-fi
++    MEDIUM|ARPCHECK|ARPSEND)
++        # Do nothing
++        ;;
++    PREINIT)
++        # The DHCP client is requesting that an interface be
++        # configured as required in order to send packets prior to
++        # receiving an actual address. - dhclient-script(8)
++
++        # ensure interface is up
++        ip link set dev ${interface} up
++
++        if [ -n "$alias_ip_address" ]; then
++            # flush alias IP from interface
++            ip -4 addr flush dev ${interface} label ${interface}:0
++        fi
++
++        ;;
++
++    BOUND|RENEW|REBIND|REBOOT)
++        set_hostname
++
++        if [ -n "$old_ip_address" ] && [ -n "$alias_ip_address" ] &&
++           [ "$alias_ip_address" != "$old_ip_address" ]; then
++            # alias IP may have changed => flush it
++            ip -4 addr flush dev ${interface} label ${interface}:0
++        fi
++
++        if [ -n "$old_ip_address" ] &&
++           [ "$old_ip_address" != "$new_ip_address" ]; then
++            # leased IP has changed => flush it
++            ip -4 addr flush dev ${interface} label ${interface}
++        fi
++
++        if [ -z "$old_ip_address" ] ||
++           [ "$old_ip_address" != "$new_ip_address" ] ||
++           [ "$reason" = "BOUND" ] || [ "$reason" = "REBOOT" ]; then
++            # new IP has been leased or leased IP changed => set it
++            ip -4 addr add ${new_ip_address}${new_subnet_mask:+/$new_subnet_mask} \
++                ${new_broadcast_address:+broadcast $new_broadcast_address} \
++                dev ${interface} label ${interface}
++
++            if [ -n "$new_interface_mtu" ]; then
++                # set MTU
++                ip link set dev ${interface} mtu ${new_interface_mtu}
++            fi
++
++            # set if_metric if IF_METRIC is set or there's more than one router
++            if_metric="$IF_METRIC"
++            if [ "${new_routers%% *}" != "${new_routers}" ]; then
++                if_metric=${if_metric:-1}
++            fi
++
++            for router in $new_routers; do
++                if [ "$new_subnet_mask" = "255.255.255.255" ]; then
++                    # point-to-point connection => set explicit route
++                    ip -4 route add ${router} dev $interface >/dev/null 2>&1
++                fi
++
++                # set default route
++                ip -4 route add default via ${router} dev ${interface} \
++                    ${if_metric:+metric $if_metric} >/dev/null 2>&1
++
++                if [ -n "$if_metric" ]; then
++                    if_metric=$((if_metric+1))
++                fi
++            done
++        fi
++
++        if [ -n "$alias_ip_address" ] &&
++           [ "$new_ip_address" != "$alias_ip_address" ]; then
++            # separate alias IP given, which may have changed
++            # => flush it, set it & add host route to it
++            ip -4 addr flush dev ${interface} label ${interface}:0
++            ip -4 addr add ${alias_ip_address}${alias_subnet_mask:+/$alias_subnet_mask} \
++                dev ${interface} label ${interface}:0
++            ip -4 route add ${alias_ip_address} dev ${interface} >/dev/null 2>&1
++        fi
++
++        # update /etc/resolv.conf
++        make_resolv_conf
++
++        ;;
++
++    EXPIRE|FAIL|RELEASE|STOP)
++        if [ -n "$alias_ip_address" ]; then
++            # flush alias IP
++            ip -4 addr flush dev ${interface} label ${interface}:0
++        fi
++
++        if [ -n "$old_ip_address" ]; then
++            # flush leased IP
++            ip -4 addr flush dev ${interface} label ${interface}
++        fi
++
++        if [ -n "$alias_ip_address" ]; then
++            # alias IP given => set it & add host route to it
++            ip -4 addr add ${alias_ip_address}${alias_network_arg} \
++                dev ${interface} label ${interface}:0
++            ip -4 route add ${alias_ip_address} dev ${interface} >/dev/null 2>&1
++        fi
++
++        ;;
++
++    TIMEOUT)
++        if [ -n "$alias_ip_address" ]; then
++            # flush alias IP
++            ip -4 addr flush dev ${interface} label ${interface}:0
++        fi
++
++        # set IP from recorded lease
++        ip -4 addr add ${new_ip_address}${new_subnet_mask:+/$new_subnet_mask} \
++            ${new_broadcast_address:+broadcast $new_broadcast_address} \
++            dev ${interface} label ${interface}
++
++        if [ -n "$new_interface_mtu" ]; then
++            # set MTU
++            ip link set dev ${interface} mtu ${new_interface_mtu}
++        fi
++
++        # if there is no router recorded in the lease or the 1st router answers pings
++        if [ -z "$new_routers" ] || ping -q -c 1 "${new_routers%% *}"; then
++            if [ -n "$alias_ip_address" ] &&
++               [ "$new_ip_address" != "$alias_ip_address" ]; then
++                # separate alias IP given => set up the alias IP & add host route to it
++                ip -4 addr add ${alias_ip_address}${alias_subnet_mask:+/$alias_subnet_mask} \
++                    dev ${interface} label ${interface}:0
++                ip -4 route add ${alias_ip_address} dev ${interface} >/dev/null 2>&1
++            fi
++
++            # set if_metric if IF_METRIC is set or there's more than one router
++            if_metric="$IF_METRIC"
++            if [ "${new_routers%% *}" != "${new_routers}" ]; then
++                if_metric=${if_metric:-1}
++            fi
++
++            # set default route
++            for router in $new_routers; do
++                ip -4 route add default via ${router} dev ${interface} \
++                    ${if_metric:+metric $if_metric} >/dev/null 2>&1
++
++                if [ -n "$if_metric" ]; then
++                    if_metric=$((if_metric+1))
++                fi
++            done
++
++            # update /etc/resolv.conf
++            make_resolv_conf
++        else
++            # flush all IPs from interface
++            ip -4 addr flush dev ${interface}
++            exit_with_hooks 1
++        fi
++
++        ;;
++
++    ### DHCPv6 Handlers
++    # TODO handle prefix change: ?based on ${old_ip6_prefix} and ${new_ip6_prefix}?
++
++    PREINIT6)
++        # ensure interface is up
++        ip link set ${interface} up
++
++        # flush any stale global permanent IPs from interface
++        ip -6 addr flush dev ${interface} scope global permanent
++
++        ;;
++
++    BOUND6|RENEW6|REBIND6)
++        if [ "${new_ip6_address}" ] && [ "${new_ip6_prefixlen}" ]; then
++            # set leased IP
++            ip -6 addr add ${new_ip6_address}/${new_ip6_prefixlen} \
++                dev ${interface} scope global
++        fi
++
++        # update /etc/resolv.conf
++        if [ "${reason}" = BOUND6 ] ||
++           [ "${new_dhcp6_name_servers}" != "${old_dhcp6_name_servers}" ] ||
++           [ "${new_dhcp6_domain_search}" != "${old_dhcp6_domain_search}" ]; then
++            make_resolv_conf
++        fi
++
++        ;;
++
++    DEPREF6)
++        if [ -z "${cur_ip6_prefixlen}" ]; then
++            exit_with_hooks 1
++        fi
++
++        # set preferred lifetime of leased IP to 0
++        ip -6 addr change ${cur_ip6_address}/${cur_ip6_prefixlen} \
++            dev ${interface} scope global preferred_lft 0
++
++        ;;
++
++    EXPIRE6|RELEASE6|STOP6)
++        if [ -z "${old_ip6_address}" ] || [ -z "${old_ip6_prefixlen}" ]; then
++            exit_with_hooks 1
++        fi
++
++        # delete leased IP
++        ip -6 addr del ${old_ip6_address}/${old_ip6_prefixlen} \
++            dev ${interface}
+ 
+-if [ x$reason = xEXPIRE ] || [ x$reason = xFAIL ] || [ x$reason = xRELEASE ] \
+-   || [ x$reason = xSTOP ]; then
+-  if [ x$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
+-    route add -host $alias_ip_address $interface:0
+-  fi
+-  exit_with_hooks 0
+-fi
+-
+-if [ x$reason = xTIMEOUT ]; 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 $mtu_arg
+-  set $new_routers
+-  if ping -q -c 1 $1; then
+-    if [ x$new_ip_address != x$alias_ip_address ] && \
+-			[ x$alias_ip_address != x ]; then
+-      ifconfig $interface:0 inet $alias_ip_address $alias_subnet_arg
+-      route add -host $alias_ip_address dev $interface:0
+-    fi
+-    for router in $new_routers; do
+-      if [ "x$new_subnet_mask" = "x255.255.255.255" ] ; then
+-	route add -host $router dev $interface
+-      fi
+-      route add default gw $router $metric_arg dev $interface
+-    done
+-    make_resolv_conf
+-    exit_with_hooks 0
+-  fi
+-  ifconfig $interface inet 0 down
+-  exit_with_hooks 1
+-fi
+-
+-###
+-### DHCPv6 Handlers
+-###
+-
+-if [ x$reason = xPREINIT6 ] ; then
+-  # Ensure interface is up.
+-  ${ip} link set ${interface} up
+-
+-  # Remove any stale addresses from aborted clients.
+-  ${ip} -f inet6 addr flush dev ${interface} scope global permanent
+-
+-  exit_with_hooks 0
+-fi
+-
+-if [ x${old_ip6_prefix} != x ] || [ x${new_ip6_prefix} != x ] ; then
+-    echo Prefix ${reason} old=${old_ip6_prefix} new=${new_ip6_prefix}
+-
+-    exit_with_hooks 0
+-fi
+-
+-if [ x$reason = xBOUND6 ] ; then
+-  if [ x${new_ip6_address} = x ] || [ x${new_ip6_prefixlen} = x ] ; then
+-    exit_with_hooks 2;
+-  fi
+-
+-  ${ip} -f inet6 addr add ${new_ip6_address}/${new_ip6_prefixlen} \
+-	dev ${interface} scope global
+-
+-  # Check for nameserver options.
+-  make_resolv_conf
+-
+-  exit_with_hooks 0
+-fi
+-
+-if [ x$reason = xRENEW6 ] || [ x$reason = xREBIND6 ] ; then
+-  if [ x${new_ip6_address} = x ] || [ x${new_ip6_prefixlen} = x ] ; then
+-    exit_with_hooks 2;
+-  fi
+-
+-  ${ip} -f inet6 addr add ${new_ip6_address}/${new_ip6_prefixlen} \
+-	dev ${interface} scope global
+-
+-  # Make sure nothing has moved around on us.
+-
+-  # Nameservers/domains/etc.
+-  if [ "x${new_dhcp6_name_servers}" != "x${old_dhcp6_name_servers}" ] ||
+-     [ "x${new_dhcp6_domain_search}" != "x${old_dhcp6_domain_search}" ] ; then
+-    make_resolv_conf
+-  fi
+-
+-  exit_with_hooks 0
+-fi
+-
+-if [ x$reason = xDEPREF6 ] ; then
+-  if [ x${new_ip6_prefixlen} = x ] ; then
+-    exit_with_hooks 2;
+-  fi
+-
+-  ${ip} -f inet6 addr change ${new_ip6_address}/${new_ip6_prefixlen} \
+-       dev ${interface} scope global preferred_lft 0
+-
+-  exit_with_hooks 0
+-fi
+-
+-if [ x$reason = xEXPIRE6 -o x$reason = xRELEASE6 -o x$reason = xSTOP6 ] ; then
+-  if [ x${old_ip6_address} = x ] || [ x${old_ip6_prefixlen} = x ] ; then
+-    exit_with_hooks 2;
+-  fi
+-
+-  ${ip} -f inet6 addr del ${old_ip6_address}/${old_ip6_prefixlen} \
+-	dev ${interface}
+-
+-  exit_with_hooks 0
+-fi
++        ;;
++esac
+ 
+ exit_with_hooks 0


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