#! /bin/sh # # Copyright (c) 2000 The KAME Project # All rights reserved. # # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions # are met: # 1. Redistributions of source code must retain the above copyright # notice, this list of conditions and the following disclaimer. # 2. Redistributions in binary form must reproduce the above copyright # notice, this list of conditions and the following disclaimer in the # documentation and/or other materials provided with the distribution. # # THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE # ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF # SUCH DAMAGE. # # $FreeBSD$ # # Note that almost all of the user-configurable behavior is not in this # file, but rather in /etc/defaults/rc.conf. Please check that file # first before contemplating any changes here. If you do need to change # this file for some reason, we would like to know about it. # IPv6 startup network6_pass1() { echo -n 'Doing IPv6 network setup:' # Initialize IP filtering using ip6fw # if /sbin/ip6fw -q flush > /dev/null 2>&1; then ipv6_firewall_in_kernel=1 else ipv6_firewall_in_kernel=0 fi case ${ipv6_firewall_enable} in [Yy][Ee][Ss]) if [ "${ipv6_firewall_in_kernel}" -eq 0 ] && kldload ip6fw; then ipv6_firewall_in_kernel=1 echo "Kernel IPv6 firewall module loaded." elif [ "${ipv6_firewall_in_kernel}" -eq 0 ]; then echo "Warning: IPv6 firewall kernel module failed to load." fi ;; esac # Load the filters if required # case ${ipv6_firewall_in_kernel} in 1) if [ -z "${ipv6_firewall_script}" ]; then ipv6_firewall_script=/etc/rc.firewall6 fi case ${ipv6_firewall_enable} in [Yy][Ee][Ss]) if [ -r "${ipv6_firewall_script}" ]; then . "${ipv6_firewall_script}" echo -n 'IPv6 Firewall rules loaded.' elif [ "`ip6fw l 65535`" = "65535 deny ipv6 from any to any" ]; then echo -n "Warning: kernel has IPv6 firewall functionality, " echo "but IPv6 firewall rules are not enabled." echo " All ipv6 services are disabled." fi case ${ipv6_firewall_logging} in [Yy][Ee][Ss] | '') echo 'IPv6 Firewall logging=YES' sysctl -w net.inet6.ip6.fw.verbose=1 >/dev/null ;; *) ;; esac ;; esac ;; esac case ${ipv6_network_interfaces} in [Aa][Uu][Tt][Oo]) # # list of interfaces, and prefix for interfaces # ipv6_network_interfaces="`ifconfig -l`" ;; esac # just to make sure ifconfig lo0 up # disallow "internal" addresses to appear on the wire route add -inet6 ::ffff:0.0.0.0 -prefixlen 96 ::1 -reject route add -inet6 ::0.0.0.0 -prefixlen 96 ::1 -reject case ${ipv6_gateway_enable} in [Yy][Ee][Ss]) # act as a router sysctl -w net.inet6.ip6.forwarding=1 sysctl -w net.inet6.ip6.accept_rtadv=0 # wait for DAD for i in $ipv6_network_interfaces; do ifconfig $i up done sleep `sysctl -n net.inet6.ip6.dad_count` sleep 1 ;; *) # act as endhost - start with manual configuration sysctl -w net.inet6.ip6.forwarding=0 sysctl -w net.inet6.ip6.accept_rtadv=0 ;; esac # setting up interfaces network6_interface_setup $ipv6_network_interfaces # wait for DAD's completion (for global addrs) sleep `sysctl -n net.inet6.ip6.dad_count` sleep 1 case ${ipv6_gateway_enable} in [Yy][Ee][Ss]) # Filter out interfaces on which IPv6 addr init failed. ipv6_working_interfaces="" for i in ${ipv6_network_interfaces}; do laddr=`network6_getladdr $i exclude_tentative` case ${laddr} in '') ;; *) ipv6_working_interfaces="$i \ ${ipv6_working_interfaces}" ;; esac done ipv6_network_interfaces=${ipv6_working_interfaces} ;; esac # 6to4 setup network6_stf_setup # install the "default interface" to kernel, which will be used # as the default route when there's no router. network6_default_interface_setup # setup static routes network6_static_routes_setup case ${ipv6_gateway_enable} in [Yy][Ee][Ss]) # ipv6_router case ${ipv6_router_enable} in [Yy][Ee][Ss]) if [ -x ${ipv6_router} ]; then echo -n " ${ipv6_router}" ${ipv6_router} ${ipv6_router_flags} fi ;; esac # rtadvd # This should enabled with a great care. # You may want to fine-tune /etc/rtadvd.conf. # # And if you wish your rtadvd to receive and process # router renumbering messages, specify your Router Renumbering # security policy by -R option. # # See `man 3 ipsec_set_policy` for IPsec policy specification # details. # (CAUTION: This enables your routers prefix renumbering # from another machine, so if you enable this, do it with # enough care.) # case ${rtadvd_enable} in [Yy][Ee][Ss]) # default case ${rtadvd_interfaces} in '') for i in ${ipv6_network_interfaces}; do case $i in lo0|gif*|stf*|faith*) continue ;; *) rtadvd_interfaces="${rtadvd_interfaces} ${i}" ;; esac done ;; esac rtadvd ${rtadvd_interfaces} # # Enable Router Renumbering, unicast case # (use correct src/dst addr) # rtadvd -R "in ipsec ah/transport/fec0:0:0:1::1-fec0:0:0:10::1/require" \ # ${ipv6_network_interfaces} # Enable Router Renumbering, multicast case # (use correct src addr) # rtadvd -R "in ipsec ah/transport/ff05::2-fec0:0:0:10::1/require" \ # ${ipv6_network_interfaces} ;; esac # mroute6d case ${mroute6d_enable} in [Yy][Ee][Ss]) if [ -x ${mroute6d_program} ]; then echo -n " ${mroute6d_program}" ${mroute6d_program} ${mroute6d_flags} fi ;; esac ;; esac case ${ipv6_ipv4mapping} in [Yy][Ee][Ss]) echo -n ' IPv4 mapped IPv6 address support=YES' sysctl -w net.inet6.ip6.mapped_addr=1 >/dev/null ;; '' | *) echo -n ' IPv4 mapped IPv6 address support=NO' sysctl -w net.inet6.ip6.mapped_addr=0 >/dev/null ;; esac echo '.' # Let future generations know we made it. # network6_pass1_done=YES } network6_interface_setup() { interfaces=$* rtsol_interfaces='' case ${ipv6_gateway_enable} in [Yy][Ee][Ss]) rtsol_available=no ;; *) rtsol_available=yes prefixcmd_enable=NO ;; esac for i in $interfaces; do rtsol_interface=yes eval prefix=\$ipv6_prefix_$i if [ -n "${prefix}" ]; then rtsol_available=no rtsol_interface=no for j in ${prefix}; do case ${prefixcmd_enable} in [Yy][Ee][Ss]) prefix $i $j:: ;; *) laddr=`network6_getladdr $i` hostid=`expr "${laddr}" : \ 'fe80::\(.*\)%\(.*\)'` address=$j\:${hostid} eval hostid_$i=${hostid} eval address_$i=${address} ifconfig $i inet6 ${address} \ prefixlen 64 alias ;; esac case ${ipv6_gateway_enable} in [Yy][Ee][Ss]) # subnet-router anycast address # (rfc2373) ifconfig $i inet6 $j:: prefixlen 64 \ alias anycast ;; esac done fi eval ipv6_ifconfig=\$ipv6_ifconfig_$i if [ -n "${ipv6_ifconfig}" ]; then rtsol_available=no rtsol_interface=no ifconfig $i inet6 ${ipv6_ifconfig} alias fi alias=0 while : ; do eval ipv6_ifconfig=\$ipv6_ifconfig_${i}_alias${alias} if [ -z "${ipv6_ifconfig}" ]; then break; fi ifconfig $i inet6 ${ipv6_ifconfig} alias alias=$((${alias} + 1)) done if [ ${rtsol_available} = yes -a ${rtsol_interface} = yes ] then case ${i} in lo0|gif*|stf*|faith*) ;; *) rtsol_interfaces="${rtsol_interfaces} ${i}" ;; esac else ifconfig $i inet6 fi done if [ ${rtsol_available} = yes -a -n "${rtsol_interfaces}" ]; then # Act as endhost - automatically configured. # You can configure only single interface, as # specification assumes that autoconfigured host has # single interface only. sysctl -w net.inet6.ip6.accept_rtadv=1 set ${rtsol_interfaces} ifconfig $1 up rtsol $1 fi } network6_stf_setup() { case ${stf_interface_ipv4addr} in [Nn][Oo] | '') ;; *) # assign IPv6 addr and interface route for 6to4 interface stf_prefixlen=$((16+${stf_interface_ipv4plen:-0})) OIFS="$IFS" IFS=".$IFS" set ${stf_interface_ipv4addr} IFS="$OIFS" ipv4_in_hexformat=`printf "%x:%x\n" \ $(($1*256 + $2)) $(($3*256 + $4))` case ${stf_interface_ipv6_ifid} in [Aa][Uu][Tt][Oo] | '') for i in ${ipv6_network_interfaces}; do laddr=`network6_getladdr ${i}` case ${laddr} in '') ;; *) break ;; esac done stf_interface_ipv6_ifid=`expr "${laddr}" : \ 'fe80::\(.*\)%\(.*\)'` case ${stf_interface_ipv6_ifid} in '') stf_interface_ipv6_ifid=0:0:0:1 ;; esac ;; esac ifconfig stf0 inet6 2002:${ipv4_in_hexformat}:${stf_interface_ipv6_slaid:-0}:${stf_interface_ipv6_ifid} \ prefixlen ${stf_prefixlen} # disallow packets to malicious 6to4 prefix route add -inet6 2002:e000:: -prefixlen 20 ::1 -reject route add -inet6 2002:7f00:: -prefixlen 24 ::1 -reject route add -inet6 2002:0000:: -prefixlen 24 ::1 -reject route add -inet6 2002:ff00:: -prefixlen 24 ::1 -reject ;; esac } network6_static_routes_setup() { # Set up any static routes. case ${ipv6_defaultrouter} in [Nn][Oo] | '') ;; *) ipv6_static_routes="default ${ipv6_static_routes}" ipv6_route_default="default ${ipv6_defaultrouter}" ;; esac case ${ipv6_static_routes} in [Nn][Oo] | '') ;; *) for i in ${ipv6_static_routes}; do eval ipv6_route_args=\$ipv6_route_${i} route add -inet6 ${ipv6_route_args} done ;; esac } network6_default_interface_setup() { # Choose IPv6 default interface if it is not clearly specified. case ${ipv6_default_interface} in '') for i in ${ipv6_network_interfaces}; do laddr=`network6_getladdr $i exclude_tentative` case ${laddr} in '') ;; *) ipv6_default_interface=$i break ;; esac done ;; esac # Disallow unicast packets without outgoing scope identifiers, # or route such packets to a "default" interface, if it is specified. route add -inet6 fe80:: -prefixlen 10 ::1 -reject case ${ipv6_default_interface} in [Nn][Oo] | '') route add -inet6 ff02:: -prefixlen 16 ::1 -reject ;; *) laddr=`network6_getladdr ${ipv6_default_interface}` route add -inet6 ff02:: ${laddr} -prefixlen 16 -interface \ -cloning # Disable installing the default interface with the # case net.inet6.ip6.forwarding=0 and # net.inet6.ip6.accept_rtadv=0, due to avoid conflict # between the default router list and the manual # configured default route. case ${ipv6_gateway_enable} in [Yy][Ee][Ss]) ;; *) if [ `sysctl -n net.inet6.ip6.accept_rtadv` -eq 1 ] then ndp -I ${ipv6_default_interface} fi ;; esac ;; esac } network6_getladdr() { ifconfig $1 2>/dev/null | while read proto addr rest; do case ${proto} in inet6) case ${addr} in fe80::*) if [ -z "$2" ]; then echo ${addr} return fi case ${rest} in *tentative*) continue ;; *) echo ${addr} return esac esac esac done }