# 6to4.sh - IPv6-in-IPv4 tunnel backend
-# Copyright (c) 2010 OpenWrt.org
+# Copyright (c) 2010-2011 OpenWrt.org
find_6to4_wanif() {
local if=$(ip -4 r l e 0.0.0.0/0); if="${if#default* dev }"; if="${if%% *}"
printf "2002:%02x%02x:%02x%02x\n" $1 $2 $3 $4
}
+test_6to4_rfc1918()
+{
+ local oIFS="$IFS"; IFS="."; set -- $1; IFS="$oIFS"
+ [ $1 -eq 10 ] && return 0
+ [ $1 -eq 192 ] && [ $2 -eq 168 ] && return 0
+ [ $1 -eq 172 ] && [ $2 -ge 16 ] && [ $2 -le 31 ] && return 0
+ return 1
+}
+
+set_6to4_radvd_interface() {
+ local cfgid="$1"
+ local lanif="${2:-lan}"
+ local ifmtu="${3:-1280}"
+ local ifsection=""
+
+ find_ifsection() {
+ local net
+ local cfg="$1"
+ config_get net "$cfg" interface
+
+ [ "$net" = "$lanif" ] && {
+ ifsection="$cfg"
+ return 1
+ }
+ }
+
+ config_foreach find_ifsection interface
+
+ [ -z "$ifsection" ] && {
+ ifsection="iface_$sid"
+ uci_set_state radvd "$ifsection" "" interface
+ uci_set_state radvd "$ifsection" interface "$lanif"
+ }
+
+ uci_set_state radvd "$ifsection" ignore 0
+ uci_set_state radvd "$ifsection" IgnoreIfMissing 1
+ uci_set_state radvd "$ifsection" AdvSendAdvert 1
+ uci_set_state radvd "$ifsection" MaxRtrAdvInterval 30
+ uci_set_state radvd "$ifsection" AdvLinkMTU "$ifmtu"
+}
+
+set_6to4_radvd_prefix() {
+ local cfgid="$1"
+ local lanif="${2:-lan}"
+ local wanif="${3:-wan}"
+ local prefix="${4:-0:0:0:1::/64}"
+ local vlt="${5:-300}"
+ local plt="${6:-120}"
+ local pfxsection=""
+
+ find_pfxsection() {
+ local net base
+ local cfg="$1"
+ config_get net "$cfg" interface
+ config_get base "$cfg" Base6to4Interface
+
+ [ "$net" = "$lanif" ] && [ "$base" = "$wanif" ] && {
+ pfxsection="$cfg"
+ return 1
+ }
+ }
+
+ config_foreach find_pfxsection prefix
+
+ [ -z "$pfxsection" ] && {
+ pfxsection="prefix_${sid}_${lanif}"
+ uci_set_state radvd "$pfxsection" "" prefix
+ uci_set_state radvd "$pfxsection" ignore 0
+ uci_set_state radvd "$pfxsection" interface "$lanif"
+ uci_set_state radvd "$pfxsection" prefix "$prefix"
+ uci_set_state radvd "$pfxsection" AdvOnLink 1
+ uci_set_state radvd "$pfxsection" AdvAutonomous 1
+ uci_set_state radvd "$pfxsection" AdvValidLifetime "$vlt"
+ uci_set_state radvd "$pfxsection" AdvPreferredLifetime "$plt"
+ uci_set_state radvd "$pfxsection" Base6to4Interface "$wanif"
+ }
+}
+
+
# Hook into scan_interfaces() to synthesize a .device option
# This is needed for /sbin/ifup to properly dispatch control
# to setup_interface_6to4() even if no .ifname is set in
local ttl
config_get ttl "$cfg" ttl
+ local metric
+ config_get metric "$cfg" metric
+
local defaultroute
config_get_bool defaultroute "$cfg" defaultroute 1
}
}
+ test_6to4_rfc1918 "$local4" && {
+ logger -t "$link" "Local wan ip $local4 is private - aborting"
+ return
+ }
+
[ -n "$local4" ] && {
logger -t "$link" "Starting ..."
[ "$defaultroute" = 1 ] && {
logger -t "$link" " * Adding default route"
- ip -6 route add 2000::/3 via ::192.88.99.1 dev $link metric 1
+ ip -6 route add ::/0 via ::192.88.99.1 metric ${metric:-1} dev $link
uci_set_state network "$cfg" defaultroute 1
}
- # find delegation target
- local adv_interface
- config_get adv_interface "$cfg" adv_interface
-
- local adv_ifname
- config_get adv_ifname "${adv_interface:-lan}" ifname
-
- local adv_subnet=$(uci_get network "$cfg" adv_subnet)
-
- grep -qs "^ *$adv_ifname:" /proc/net/dev && {
- local subnet6="$prefix6:${adv_subnet:-1}::1/64"
-
- logger -t "$link" " * Advertising IPv6 subnet $subnet6 on ${adv_interface:-lan} ($adv_ifname)"
- ip -6 addr add $subnet6 dev $adv_ifname
- uci_set_state network "$cfg" adv_subnet "$subnet6"
- uci_set_state network "$cfg" adv_ifname "$adv_ifname"
-
- [ -f /etc/config/radvd ] && /etc/init.d/radvd enabled && {
- local sid="6to4_$cfg"
-
- uci -q batch <<-EOF
- revert radvd.iface_$sid
- revert radvd.prefix_$sid
- set radvd.iface_$sid=interface
- set radvd.iface_$sid.ignore=0
- set radvd.iface_$sid.interface=${adv_interface:-lan}
- set radvd.iface_$sid.IgnoreIfMissing=1
- set radvd.iface_$sid.AdvSendAdvert=1
- set radvd.iface_$sid.MaxRtrAdvInterval=30
- set radvd.prefix_$sid=prefix
- set radvd.prefix_$sid.ignore=0
- set radvd.prefix_$sid.interface=${adv_interface:-lan}
- set radvd.prefix_$sid.prefix=0:0:0:${adv_subnet:-1}::/64
- set radvd.prefix_$sid.AdvOnLink=1
- set radvd.prefix_$sid.AdvAutonomous=1
- set radvd.prefix_$sid.AdvValidLifetime=300
- set radvd.prefix_$sid.AdvPreferredLifetime=120
- set radvd.prefix_$sid.Base6to4Interface=$wancfg
- EOF
-
- /etc/init.d/radvd restart
- }
+ [ -f /etc/config/radvd ] && /etc/init.d/radvd enabled && {
+ local sid="6to4_$cfg"
+
+ uci_revert_state radvd
+ config_load radvd
+
+ # find delegation target
+ local adv_interface
+ config_get adv_interface "$cfg" adv_interface
+
+ local adv_subnet=$(uci_get network "$cfg" adv_subnet)
+ adv_subnet=$((0x${adv_subnet:-1}))
+
+ local adv_subnets=""
+
+ for adv_interface in ${adv_interface:-lan}; do
+ local adv_ifname
+ config_get adv_ifname "${adv_interface:-lan}" ifname
+
+ grep -qs "^ *$adv_ifname:" /proc/net/dev && {
+ local adv_valid_lifetime adv_preferred_lifetime
+ config_get adv_valid_lifetime "$cfg" adv_valid_lifetime
+ config_get adv_preferred_lifetime "$cfg" adv_preferred_lifetime
+
+ local subnet6="$(printf "%s:%x::1/64" "$prefix6" $adv_subnet)"
+
+ logger -t "$link" " * Advertising IPv6 subnet $subnet6 on ${adv_interface:-lan} ($adv_ifname)"
+ ip -6 addr add $subnet6 dev $adv_ifname
+
+ set_6to4_radvd_interface "$sid" "$adv_interface" "$mtu"
+ set_6to4_radvd_prefix "$sid" "$adv_interface" \
+ "$wancfg" "$(printf "0:0:0:%x::/64" $adv_subnet)" \
+ "$adv_valid_lifetime" "$adv_preferred_lifetime"
+
+ adv_subnets="${adv_subnets:+$adv_subnets }$adv_ifname:$subnet6"
+ adv_subnet=$(($adv_subnet + 1))
+ }
+ done
+
+ uci_set_state network "$cfg" adv_subnets "$adv_subnets"
+
+ /etc/init.d/radvd restart
}
logger -t "$link" "... started"
local local6=$(uci_get_state network "$cfg" ip6addr)
local defaultroute=$(uci_get_state network "$cfg" defaultroute)
- local adv_subnet=$(uci_get_state network "$cfg" adv_subnet)
- local adv_ifname=$(uci_get_state network "$cfg" adv_ifname)
+ local adv_subnets=$(uci_get_state network "$cfg" adv_subnets)
grep -qs "^ *$link:" /proc/net/dev && {
logger -t "$link" "Shutting down ..."
env -i ACTION="ifdown" INTERFACE="$cfg" DEVICE="$link" PROTO=6to4 /sbin/hotplug-call "iface" &
- [ -n "$adv_subnet" ] && [ -n "$adv_ifname" ] && {
- local sid="6to4_$cfg"
-
- uci -q batch <<-EOF
- revert radvd.iface_$sid
- revert radvd.prefix_$sid
- EOF
-
+ [ -n "$adv_subnets" ] && {
+ uci_revert_state radvd
/etc/init.d/radvd enabled && /etc/init.d/radvd restart
- ip -6 addr del $adv_subnet dev $adv_ifname
- }
+ local adv_subnet
+ for adv_subnet in $adv_subnets; do
+ local ifname="${adv_subnet%%:*}"
+ local subnet="${adv_subnet#*:}"
- [ "$defaultroute" = "1" ] && {
- ip -6 route del 2000::/3 via ::192.88.99.1 dev $link metric 1
+ logger -t "$link" " * Removing IPv6 subnet $subnet from interface $ifname"
+ ip -6 addr del $subnet dev $ifname
+ done
}
+ [ "$defaultroute" = "1" ] && \
+ ip -6 route del ::/0 via ::192.88.99.1 dev $link
+
ip addr del $local6 dev $link
ip link set $link down
ip tunnel del $link
projects / openwrt.git / blobdiff