${INSTALL_SCRIPT} ${FILESDIR}/dual-dhclient-script ${STAGEDIR}${PREFIX}/sbin

	${INSTALL_SCRIPT} ${FILESDIR}/dual-dhclient-script-locked ${STAGEDIR}${PREFIX}/sbin

	${INSTALL_DATA} ${FILESDIR}/dual-dhclient.conf.sample ${STAGEDIR}${PREFIX}/etc

#!/bin/sh

script="${0}-locked"

lockf /var/run/dhcp46.lock "${script}" "$@"

#!/bin/sh

#

# $Id: freebsd,v 1.24 2011/05/18 19:55:44 sar Exp $

#

# $FreeBSD$

if [ -x /usr/bin/logger ]; then

	LOGGER="/usr/bin/logger -s -p user.notice -t dhclient"

else

	LOGGER=echo

fi

make_resolv_conf() {

  old_domain_search=''

  old_domain_name_servers=''

  old_dhcp6_domain_search=''

  old_dhcp6_name_servers=''

  while read cmd param net

  do

    case "${cmd} ${net}" in

      ("search #IPv4")

        old_domain_search="${old_domain_search} ${param}"

        ;;

      ("search #IPv6")

        old_dhcp6_domain_search="${old_dhcp6_domain_search} ${param}"

        ;;

      ("nameserver #IPv4")

        old_domain_name_servers="${old_domain_name_servers} ${param}"

        ;;

      ("nameserver #IPv6")

        old_dhcp6_name_servers="${old_dhcp6_name_servers} ${param}"

        ;;

    esac

  done < /etc/resolv.conf

  if [ x"$new_domain_name_servers" != x ]; then

    ( cat /dev/null > /etc/resolv.conf.dhclient )

    exit_status=$?

    if [ $exit_status -ne 0 ]; then

      $LOGGER "Unable to create /etc/resolv.conf.dhclient: Error $exit_status"

    else

      if [ "x$new_domain_search" != x ]; then

	( echo "search ${new_domain_search} #IPv4" >> /etc/resolv.conf.dhclient )

	exit_status=$?

      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 #IPv4" >> /etc/resolv.conf.dhclient )

	exit_status=$?

      fi

      for search in ${old_dhcp6_domain_search}

      do

	if [ ${exit_status} -ne 0 ]; then

	  break

	fi

	( echo "search ${search} #IPv6" >> /etc/resolv.conf.dhclient )

	exit_status=$?

      done

      for nameserver in $new_domain_name_servers

      do

	if [ $exit_status -ne 0 ]; then

	  break

	fi

	( echo "nameserver ${nameserver} #IPv4" >>/etc/resolv.conf.dhclient )

	exit_status=$?

      done

      for nameserver in ${old_dhcp6_name_servers}

      do

	if [ $exit_status -ne 0 ]; then

	  break

	fi

	( echo "nameserver ${nameserver} #IPv6" >> /etc/resolv.conf.dhclient )

	exit_status=$?

      done

      # If there were no errors, attempt to mv the new file into place.

      if [ $exit_status -eq 0 ]; then

	( mv /etc/resolv.conf.dhclient /etc/resolv.conf )

	exit_status=$?

      fi

      if [ $exit_status -ne 0 ]; then

	$LOGGER "Error while writing new /etc/resolv.conf."

      fi

    fi

  elif [ "x${new_dhcp6_name_servers}" != x ] ; then

    ( cat /dev/null > /etc/resolv.conf.dhclient6 )

    exit_status=$?

    if [ $exit_status -ne 0 ] ; then

      $LOGGER "Unable to create /etc/resolv.conf.dhclient6: Error $exit_status"

    else

      if [ "x${new_dhcp6_domain_search}" != x ] ; then

	( echo "search ${new_dhcp6_domain_search} #IPv6" >> /etc/resolv.conf.dhclient6 )

	exit_status=$?

      fi

      for search in ${old_domain_search}

      do

	if [ ${exit_status} -ne 0 ]; then

	  break

	fi

	( echo "search ${search} #IPv4" >>/etc/resolv.conf.dhclient6 )

	exit_status=$?

      done

      for nameserver in ${new_dhcp6_name_servers} ; do

	if [ $exit_status -ne 0 ] ; then

	  break

	fi

	# If the nameserver has a link-local address

	# add a <zone_id> (interface name) to it.

	case $nameserver in

	    fe80:*) zone_id="%$interface";;

	    FE80:*) zone_id="%$interface";;

	    *)      zone_id="";;

	esac

	( echo "nameserver ${nameserver}$zone_id #IPv6" >> /etc/resolv.conf.dhclient6 )

	exit_status=$?

      done

      for nameserver in ${old_domain_name_servers}

      do

	if [ $exit_status -ne 0 ]; then

	  break

	fi

	( echo "nameserver ${nameserver} #IPv4" >>/etc/resolv.conf.dhclient6 )

	exit_status=$?

      done

      if [ $exit_status -eq 0 ] ; then

        ( mv /etc/resolv.conf.dhclient6 /etc/resolv.conf )

	exit_status=$?

      fi

      if [ $exit_status -ne 0 ] ; then

	$LOGGER "Error while writing new /etc/resolv.conf."

      fi

    fi

  fi

}

# 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

  fi

# probably should do something with exit status of the local script

  exit $exit_status

}

# This function was largely borrowed from dhclient-script that

# ships with Centos, authored by Jiri Popelka and David Cantrell

# of Redhat. Thanks guys.

add_ipv6_addr_with_DAD() {

    ifconfig ${interface} inet6 ${new_ip6_address}/${new_ip6_prefixlen} alias

    if [ ${dad_wait_time} -le 0 ]

    then

        # if we're not waiting for DAD, assume we're good

        return 0

    fi

    # Repeatedly test whether newly added address passed

    # duplicate address detection (DAD)

    for i in $(seq 1 ${dad_wait_time}); do

        sleep 1 # give the DAD some time

        addr=$(ifconfig ${interface} \

            | grep "${new_ip6_address} prefixlen ${new_ip6_prefixlen}")

        # tentative flag == DAD is still not complete

        tentative=$(echo "${addr}" | grep tentative)

        # dadfailed flag == address is already in use somewhere else

        dadfailed=$(echo "${addr}" | grep duplicated)

        if [ -n "${dadfailed}" ] ; then

            # dad failed, remove the address

            ifconfig ${interface} inet6 ${new_ip6_address}/${new_ip6_prefixlen} -alias

            exit_with_hooks 3

        fi

        if [ -z "${tentative}" ] ; then

            if [ -n "${addr}" ]; then

                # DAD is over

                return 0

            else

                # address was auto-removed (or not added at all)

                exit_with_hooks 3

            fi

        fi

    done

    return 0

}

# Invoke the local dhcp client enter hooks, if they exist.

if [ -f /etc/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.

  if [ $exit_status -ne 0 ]; then

    exit $exit_status

  fi

fi

if [ x$new_network_number != x ]; then

   $LOGGER New Network Number: $new_network_number

fi

if [ x$new_broadcast_address != x ]; then

 $LOGGER New Broadcast Address: $new_broadcast_address

  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_netmask_arg="netmask $new_subnet_mask"

fi

if [ x$old_subnet_mask != x ]; then

  old_netmask_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

  eval "ifconfig $interface $medium"

  eval "ifconfig $interface inet -alias 0.0.0.0 $medium" >/dev/null 2>&1

  sleep 1

  exit_with_hooks 0

fi

###

### DHCPv4 Handlers

###

if [ x$reason = xPREINIT ]; then

  if [ x$alias_ip_address != x ]; then

    ifconfig $interface inet -alias $alias_ip_address > /dev/null 2>&1

    route delete $alias_ip_address 127.0.0.1 > /dev/null 2>&1

  fi

  ifconfig $interface inet 0.0.0.0 netmask 0.0.0.0 \

		broadcast 255.255.255.255 up

  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=`/bin/hostname`

  if [ x$current_hostname = x ] || \

     [ x$current_hostname = x$old_host_name ]; then

    if [ x$current_hostname = x ] || \

       [ x$new_host_name != x$old_host_name ]; then

      $LOGGER "New Hostname: $new_host_name"

      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

    ifconfig $interface inet -alias $alias_ip_address > /dev/null 2>&1

    route delete $alias_ip_address 127.0.0.1 > /dev/null 2>&1

  fi

  if [ x$old_ip_address != x ] && [ x$old_ip_address != x$new_ip_address ]

   then

    eval "ifconfig $interface inet -alias $old_ip_address $medium"

    route delete $old_ip_address 127.1 >/dev/null 2>&1

    for router in $old_routers; do

      route delete default $router >/dev/null 2>&1

    done

    if [ -n "$old_static_routes" ]; then

      set -- $old_static_routes

      while [ $# -gt 1 ]; do

	route delete $1 $2

	shift; shift

      done

    fi

    arp -n -a | sed -n -e 's/^.*(\(.*\)) at .*$/arp -d \1/p' |sh

  fi

  if [ x$old_ip_address = x ] || [ x$old_ip_address != x$new_ip_address ] || \

     [ x$reason = xBOUND ] || [ x$reason = xREBOOT ]; then

    eval "ifconfig $interface inet $new_ip_address $new_netmask_arg \

			$new_broadcast_arg $mtu_arg $metric_arg $medium"

    $LOGGER "New IP Address ($interface): $new_ip_address"

    $LOGGER "New Subnet Mask ($interface): $new_subnet_mask"

    $LOGGER "New Broadcast Address ($interface): $new_broadcast_address"

    if [ -n "$new_routers" ]; then

      $LOGGER "New Routers: $new_routers"

    fi

    route add $new_ip_address 127.1 >/dev/null 2>&1

    for router in $new_routers; do

      # If the subnet is captive, eg the netmask is /32 but the default

      # gateway is (obviously) outside of this, then we need to produce a

      # host route to reach the gateway.

      if [ "x$new_subnet_mask" = "x255.255.255.255" ] ; then

	route add -host $router -interface $interface

      fi

      route add default $router >/dev/null 2>&1

    done

    if [ -n "$new_static_routes" ]; then

      $LOGGER "New Static Routes: $new_static_routes"

      set -- $new_static_routes

      while [ $# -gt 1 ]; do

	route add $1 $2

	shift; shift

      done

    fi

  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.

      $LOGGER "New Routers: $new_routers"

      for router in $old_routers; do

        route delete default $router >/dev/null 2>&1

      done

      for router in $new_routers; do

        # If the subnet is captive, eg the netmask is /32 but the default

        # gateway is (obviously) outside of this, then we need to produce a

        # host route to reach the gateway.

        if [ "x$new_subnet_mask" = "x255.255.255.255" ] ; then

          route add -host $router -interface $interface

        fi

        route add default $router >/dev/null 2>&1

      done

    fi

  fi

  if [ x$new_ip_address != x$alias_ip_address ] && [ x$alias_ip_address != x ];

   then

    ifconfig $interface inet alias $alias_ip_address $alias_subnet_arg

    route add $alias_ip_address 127.0.0.1

  fi

  make_resolv_conf

  exit_with_hooks 0

fi

if [ x$reason = xEXPIRE ] || [ x$reason = xFAIL ] || [ x$reason = xRELEASE ] \

   || [ x$reason = xSTOP ]; then

  if [ x$alias_ip_address != x ]; then

    ifconfig $interface inet -alias $alias_ip_address > /dev/null 2>&1

    route delete $alias_ip_address 127.0.0.1 > /dev/null 2>&1

  fi

  if [ x$old_ip_address != x ]; then

    eval "ifconfig $interface inet -alias $old_ip_address $medium"

    route delete $old_ip_address 127.1 >/dev/null 2>&1

    for router in $old_routers; do

      route delete default $router >/dev/null 2>&1

    done

    if [ -n "$old_static_routes" ]; then

      set -- $old_static_routes

      while [ $# -gt 1 ]; do

	route delete $1 $2

	shift; shift

      done

    fi

    arp -n -a | sed -n -e 's/^.*(\(.*\)) at .*$/arp -d \1/p' \

						|sh >/dev/null 2>&1

  fi

  if [ x$alias_ip_address != x ]; then

    ifconfig $interface inet alias $alias_ip_address $alias_subnet_arg

    route add $alias_ip_address 127.0.0.1

  fi

  exit_with_hooks 0

fi

if [ x$reason = xTIMEOUT ]; then

  if [ x$alias_ip_address != x ]; then

    ifconfig $interface inet -alias $alias_ip_address > /dev/null 2>&1

    route delete $alias_ip_address 127.0.0.1 > /dev/null 2>&1

  fi

  eval "ifconfig $interface inet $new_ip_address $new_netmask_arg \

			$new_broadcast_arg $mtu_arg $metric_arg $medium"

  $LOGGER "New IP Address ($interface): $new_ip_address"

  $LOGGER "New Subnet Mask ($interface): $new_subnet_mask"

  $LOGGER "New Broadcast Address ($interface): $new_broadcast_address"

  sleep 1

  if [ -n "$new_routers" ]; then

    $LOGGER "New Routers: $new_routers"

    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 inet alias $alias_ip_address $alias_subnet_arg

	route add $alias_ip_address 127.0.0.1

      fi

      route add $new_ip_address 127.1 >/dev/null 2>&1

      for router in $new_routers; do

	if [ "x$new_subnet_mask" = "x255.255.255.255" ] ; then

	  route add -host $router -interface $interface

	fi

	route add default $router >/dev/null 2>&1

      done

      set -- $new_static_routes

      while [ $# -gt 1 ]; do

	route add $1 $2

	shift; shift

      done

      make_resolv_conf

      exit_with_hooks 0

    fi

  fi

  eval "ifconfig $interface inet -alias $new_ip_address $medium"

  for router in $old_routers; do

    route delete default $router >/dev/null 2>&1

  done

  if [ -n "$old_static_routes" ]; then

    set -- $old_static_routes

    while [ $# -gt 1 ]; do

      route delete $1 $2

      shift; shift

    done

  fi

  arp -n -a | sed -n -e 's/^.*(\(.*\)) at .*$/arp -d \1/p' \

							|sh >/dev/null 2>&1

  exit_with_hooks 1

fi

###

### DHCPv6 Handlers

###

if [ ${reason} = PREINIT6 ] ; then

  # Ensure interface is up.

  ifconfig ${interface} up

  # XXX: Remove any stale addresses from aborted clients.

  # We need to give the kernel some time to active interface

  interface_up_wait_time=5

  for i in $(seq 0 ${interface_up_wait_time})

  do

      ifconfig ${interface} | grep inactive >/dev/null 2>&1

      if [ $? -ne 0 ]; then

          break;

      fi

      sleep 1

  done

  # Wait for duplicate address detection for this interface if the

  # --dad-wait-time parameter has been specified and is greater than

  # zero.

  if [ ${dad_wait_time} -gt 0 ]; then

      # Check if any IPv6 address on this interface is marked as

      # tentative.

      ifconfig ${interface} | grep inet6 | grep tentative \

          >/dev/null 2>&1

      if [ $? -eq 0 ]; then

          # Wait for duplicate address detection to complete or for

          # the timeout specified as --dad-wait-time.

          for i in $(seq 0 $dad_wait_time)

          do

              # We're going to poll for the tentative flag every second.

              sleep 1

              ifconfig ${interface} | grep inet6 | grep tentative \

                  >/dev/null 2>&1

              if [ $? -ne 0 ]; then

                  break;

              fi

          done

      fi

  fi

  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 [ ${reason} = BOUND6 ] ; then

  if [ x${new_ip6_address} = x ] || [ x${new_ip6_prefixlen} = x ] ; then

    exit_with_hooks 2;

  fi

  # Add address to interface, check for DAD if dad_wait_time > 0

  add_ipv6_addr_with_DAD

  # Check for nameserver options.

  make_resolv_conf

  exit_with_hooks 0

fi

if [ ${reason} = RENEW6 ] || [ ${reason} = REBIND6 ] ; then

  # 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 [ ${reason} = DEPREF6 ] ; then

  if [ x${new_ip6_address} = x ] ; then

    exit_with_hooks 2;

  fi

  ifconfig ${interface} inet6 ${new_ip6_address} deprecated

  exit_with_hooks 0

fi

if [ ${reason} = EXPIRE6 -o ${reason} = RELEASE6 -o ${reason} = STOP6 ] ; then

  if [ x${old_ip6_address} = x ] || [ x${old_ip6_prefixlen} = x ] ; then

    exit_with_hooks 2;

  fi

  ifconfig ${interface} inet6 ${old_ip6_address}/${old_ip6_prefixlen} -alias

  exit_with_hooks 0

fi

exit_with_hooks 0

# dual-dhclient.conf

#lease-id-format hex;

script "/usr/local/sbin/dual-dhclient-script";