2 # 6to4.sh - IPv6-in-IPv4 tunnel backend
3 # Copyright (c) 2010-2012 OpenWrt.org
5 [ -n "$INCLUDE_ONLY" ] ||
{
7 .
/lib
/functions
/network.sh
14 local oIFS
="$IFS"; IFS
="."; set -- $ip4; IFS
="$oIFS"
16 printf "2002:%02x%02x:%02x%02x\n" $1 $2 $3 $4
21 local oIFS
="$IFS"; IFS
="."; set -- $1; IFS
="$oIFS"
22 [ $1 -eq 10 ] && return 0
23 [ $1 -eq 192 ] && [ $2 -eq 168 ] && return 0
24 [ $1 -eq 172 ] && [ $2 -ge 16 ] && [ $2 -le 31 ] && return 0
27 [ $1 -eq 100 ] && [ $2 -ge 64 ] && [ $2 -le 127 ] && return 0
35 local link
="6to4-$cfg"
37 local mtu ttl ipaddr sourcerouting
38 json_get_vars mtu ttl ipaddr sourcerouting
40 ( proto_add_host_dependency
"$cfg" 0.0.0.0 )
43 if ! network_find_wan wanif
; then
44 proto_notify_error
"$cfg" "NO_WAN_LINK"
49 if ! network_get_ipaddr ipaddr
"$wanif"; then
50 proto_notify_error
"$cfg" "NO_WAN_ADDRESS"
55 test_6to4_rfc1918
"$ipaddr" && {
56 proto_notify_error
"$cfg" "INVALID_LOCAL_ADDRESS"
60 # find our local prefix
61 local prefix6
=$
(find_6to4_prefix
"$ipaddr")
62 local local6
="$prefix6::1"
64 proto_init_update
"$link" 1
65 proto_add_ipv6_address
"$local6" 16
66 proto_add_ipv6_prefix
"$prefix6::/48"
68 if [ "$sourcerouting" != "0" ]; then
69 proto_add_ipv6_route
"::" 0 "::192.88.99.1" "" "" "::/128"
70 proto_add_ipv6_route
"::" 0 "::192.88.99.1" "" "" "$local6/16"
71 proto_add_ipv6_route
"::" 0 "::192.88.99.1" "" "" "$prefix6::/48"
73 proto_add_ipv6_route
"::" 0 "::192.88.99.1"
77 json_add_string mode sit
78 json_add_int mtu
"${mtu:-1280}"
79 json_add_int ttl
"${ttl:-64}"
80 json_add_string
local "$ipaddr"
83 proto_send_update
"$cfg"
86 proto_6to4_teardown
() {
90 proto_6to4_init_config
() {
94 proto_config_add_string
"ipaddr"
95 proto_config_add_int
"mtu"
96 proto_config_add_int
"ttl"
97 proto_config_add_boolean
"sourcerouting"
100 [ -n "$INCLUDE_ONLY" ] ||
{