freebsd-dev/etc/rc.network6

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#! /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])
ipv6_network_interfaces="`ifconfig -l \
| sed -e 's/ .*//'`"
;;
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=`ifconfig $i inet6 \
| grep 'inet6 fe80:' \
| head -1 | awk '{print $2}'`
hostid=`echo ${laddr} | sed \
-e 's/fe80:[0-9a-fA-F]+::/fe80::/' \
-e 's/fe80:://' -e 's/@.*//'`
address=$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=`ifconfig $i inet6 2>/dev/null | \
grep 'inet6 fe80:' | \
head -1 | grep -v tentative`
case ${laddr} in
'')
;;
*)
ipv6_working_interfaces="$i \
${ipv6_working_interfaces}"
;;
esac
done
ipv6_network_interfaces=${ipv6_working_interfaces}
# gifconfig
network6_gif_setup
# install the "default interface" to kernel, which will be used
# as the default route when there's no router.
network6_default_interface_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
rtadvd ${ipv6_network_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
# 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
;;
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_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=`ifconfig $i inet6 2>/dev/null \
| grep 'inet6 fe80:' | \
head -1 | grep -v 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
'')
route add -inet6 fe80:: -prefixlen 10 ::1 -reject
route add -inet6 ff02:: -prefixlen 16 ::1 -reject
;;
*)
laddr=`ifconfig ${ipv6_default_interface} inet6 \
| grep 'inet6 fe80:' | head -1 | awk '{print $2}'`
route add -inet6 fe80:: ${laddr} -prefixlen 10 -interface \
-cloning
route add -inet6 ff02:: ${laddr} -prefixlen 16 -interface \
-cloning
;;
esac
}