# 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="${3:-1280}"
local ifsection=""
find_ifsection() {
uci_set_state radvd "$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 lanif="${2:-lan}"
local wanif="${3:-wan}"
local prefix="${4:-0:0:0:1::/64}"
+ local vlt="${5:-300}"
+ local plt="${6:-120}"
local pfxsection=""
find_pfxsection() {
uci_set_state radvd "$pfxsection" prefix "$prefix"
uci_set_state radvd "$pfxsection" AdvOnLink 1
uci_set_state radvd "$pfxsection" AdvAutonomous 1
- uci_set_state radvd "$pfxsection" AdvValidLifetime 300
- uci_set_state radvd "$pfxsection" AdvPreferredLifetime 120
+ uci_set_state radvd "$pfxsection" AdvValidLifetime "$vlt"
+ uci_set_state radvd "$pfxsection" AdvPreferredLifetime "$plt"
uci_set_state radvd "$pfxsection" Base6to4Interface "$wanif"
}
}
}
}
+ test_6to4_rfc1918 "$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 metric ${metric:-1} dev $link
+ ip -6 route add ::/0 via ::192.88.99.1 metric ${metric:-1} dev $link
uci_set_state network "$cfg" defaultroute 1
}
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" "$adv_interface"
+ set_6to4_radvd_interface "$sid" "$adv_interface" "$mtu"
set_6to4_radvd_prefix "$sid" "$adv_interface" \
- "$wancfg" "$(printf "0:0:0:%x::/64" $adv_subnet)"
+ "$wancfg" "$(printf "0:0:0:%x::/64" $adv_subnet)" \
+ "$adv_valid_lifetime" "$adv_preferred_lifetime"
adv_subnets="${adv_subnets:+$adv_subnets }$adv_ifname:$subnet6"
adv_subnet=$(($adv_subnet + 1))
done
}
- [ "$defaultroute" = "1" ] && {
- ip -6 route del 2000::/3 via ::192.88.99.1 dev $link metric 1
- }
+ [ "$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