#! /bin/sh # $FreeBSD$ # 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:' case ${ipv6_gateway_enable} in [Yy][Ee][Ss]) # # list of interfaces, and prefix for interfaces # case ${ipv6_network_interfaces} in [Aa][Uu][Tt][Oo]) ipv6_network_interfaces="`ifconfig -l`" ;; esac ;; *) # # manual configurations - in case ip6_gateway_enable=NO # you can configure only single interface, # as specification assumes that # autoconfigured host has single interface only. # case ${ipv6_network_interfaces} in [Aa][Uu][Tt][Oo]) set `ifconfig -l` ipv6_network_interfaces="$1" ;; esac ;; 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 # setting up interfaces for i in $ipv6_network_interfaces; do eval prefix=\$ipv6_prefix_$i case ${prefix} in '') continue; ;; esac 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 # subnet-router anycast address (rfc2373) ifconfig $i inet6 $j:: prefixlen 64 \ alias anycast done ifconfig $i inet6 done # again, wait for DAD's completion (for global addrs) sleep `sysctl -n net.inet6.ip6.dad_count` sleep 1 # 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} # gifconfig network6_gif_setup # 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 # 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 -P 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 for i in ${ipv6_network_interfaces}; do case $i in stf*) continue ;; *) rtadvd_interfaces="${rtadvd_interfaces} ${i}" ;; esac done rtadvd ${rtadvd_interfaces} # # Enable Router Renumbering, unicast case # (use correct src/dst addr) # rtadvd -P "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 -P "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 ;; *) # act as endhost - automatically configured sysctl -w net.inet6.ip6.forwarding=0 sysctl -w net.inet6.ip6.accept_rtadv=1 ifconfig ${ipv6_network_interfaces} up rtsol ${ipv6_network_interfaces} # wait for DAD's completion (for global addrs) sleep `sysctl -n net.inet6.ip6.dad_count` sleep 1 # gifconfig network6_gif_setup # 6to4 setup network6_stf_setup # install the "default interface" to kernel, which will be used # as the default route when there's no router. # ndp -I ${ipv6_default_interface} network6_default_interface_setup # setup static routes network6_static_routes_setup ;; 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_gif_setup() { case ${gif_interfaces} in [Nn][Oo] | '') ;; *) for i in ${gif_interfaces}; do eval peers=\$gifconfig_$i case ${peers} in '') continue ;; *) gifconfig $i ${peers} ;; esac done ;; esac } 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_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 [Nn][Oo] | '') 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. case ${ipv6_default_interface} in [Nn][Oo] | '') route add -inet6 fe80:: -prefixlen 10 ::1 -reject route add -inet6 ff02:: -prefixlen 16 ::1 -reject ;; *) laddr=`network6_getladdr ${ipv6_default_interface}` route add -inet6 fe80:: ${laddr} -prefixlen 10 -interface \ -cloning route add -inet6 ff02:: ${laddr} -prefixlen 16 -interface \ -cloning ;; 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 }