I modified the interface in the configuration file
config interface 'wan6_4'
option proto '464xlat'
option ifname 'br-wan'
option ip6prefix '64:ff9b::/96'
option ip6addr '2001:db8:aaaa::/96'
option tunlink 'wan'
option zone 'wan'
In the/lib/netifd/pro/464xlat.sh script, I found that ip6addd=$(464xlatcfg "$link" "$undev" "$ip6prefix" $ip6addr) is always empty, which prevents the interface from being created. Therefore, I added a delay. It seems that the interface has been created, but it is not working as I expected
root@router:/lib/netifd/proto# ifstatus wan6_4
{
"up": true,
"pending": false,
"available": true,
"autostart": true,
"dynamic": false,
"uptime": 2979,
"l3_device": "464-wan6_4",
"proto": "464xlat",
"updated": [
"routes",
"data"
],
"metric": 0,
"delegation": true,
"ipv4-address": [
],
"ipv6-address": [
],
"ipv6-prefix": [
],
"ipv6-prefix-assignment": [
],
"route": [
{
"target": "240a:4281:fe00:3f42:d1f0:846d:eb24:5f6a",
"mask": 128,
"nexthop": "::",
"table": 128,
"source": "::\/0"
},
{
"target": "0.0.0.0",
"mask": 0,
"nexthop": "0.0.0.0",
"metric": 2048,
"source": "0.0.0.0\/0"
}
],
"dns-server": [
],
"dns-search": [
],
"inactive": {
"ipv4-address": [
],
"ipv6-address": [
],
"route": [
],
"dns-server": [
],
"dns-search": [
]
},
"data": {
"firewall": [
{
"type": "nat",
"target": "SNAT",
"family": "inet",
"snat_ip": "192.0.0.1"
},
{
"type": "rule",
"family": "inet6",
"proto": "all",
"direction": "in",
"dest": "wan",
"src": "wan",
"src_ip": "240a:4281:fe00:3f42:d1f0:846d:eb24:5f6a",
"target": "ACCEPT"
},
{
"type": "rule",
"family": "inet6",
"proto": "all",
"direction": "out",
"dest": "wan",
"src": "wan",
"dest_ip": "240a:4281:fe00:3f42:d1f0:846d:eb24:5f6a",
"target": "ACCEPT"
}
],
"zone": "wan"
}
}
root@router:/lib/netifd/proto# ifconfig
464-wan6_4 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
UP POINTOPOINT RUNNING NOARP MTU:16384 Metric:1
RX packets:12658 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1
RX bytes:890778 (869.9 KiB) TX bytes:0 (0.0 B)
If I access the network on a LAN device, there will be a log:
[ 6818.569614] [nat46] Could not translate v4->v6
[ 6818.576100] [nat46] Could not translate v4->v6
So I think my problem may not be with DNS64, because the current device 464 has not been successfully created, it should be related to the 464xlat.sh script. According to the debug log I added, it actually has many errors on my device:
root@router:/lib/netifd/proto# cat 464xlat.sh
#!/bin/sh
# 464xlat.sh - 464xlat CLAT
#
# Copyright (c) 2015 Steven Barth <cyrus@openwrt.org>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2
# as published by the Free Software Foundation
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
[ -n "$INCLUDE_ONLY" ] || {
echo "$@" > /dev/console
. /lib/functions.sh
. /lib/functions/network.sh
. ../netifd-proto.sh
init_proto "$@"
}
echo "[DEBUG] all par: $@" > /dev/console
proto_464xlat_setup() {
echo "[DEBUG] proto_464xlat_setup: $@" > /dev/console
local cfg="$1"
local iface="$2"
local link="464-$cfg"
echo "[DEBUG] Starting proto_464xlat_setup" > /dev/console
echo "[DEBUG] cfg: $cfg, iface: $iface, link: $link" > /dev/console
local ip6addr ip6prefix tunlink zone
json_get_vars ip6addr ip6prefix tunlink zone
echo "[DEBUG] Parsed JSON variables:" > /dev/console
echo "[DEBUG] ip6addr: $ip6addr, ip6prefix: $ip6prefix, tunlink: $tunlink, zone: $zone" > /dev/console
[ -z "$zone" ] && zone="wan"
echo "[DEBUG] Zone set to: $zone" > /dev/console
( proto_add_host_dependency "$cfg" "::" "$tunlink" )
echo "[DEBUG] Added host dependency for cfg: $cfg, tunlink: $tunlink" > /dev/console
if [ -z "$tunlink" ] && ! network_find_wan6 tunlink; then
echo "[ERROR] No WAN6 link found" > /dev/console
proto_notify_error "$cfg" "NO_WAN_LINK"
return
fi
echo "[DEBUG] tunlink: $tunlink" > /dev/console
network_get_device tundev "$tunlink"
# tundev=$(uci get network.wan6_4.tunlink)
echo "[DEBUG] tundev: $tundev" > /dev/console
sleep 10
echo "cmd=464xlatcfg "$link" "$tundev" "$ip6prefix" $ip6addr" >> /tmp/464xlatcfg.log
#ip6addr=$(464xlatcfg "$link" "$tundev" "$ip6prefix" 192.0.0.1 $ip6addr)
ip6addr=$(464xlatcfg "$link" "$tundev" "$ip6prefix" $ip6addr)
echo "ret=$?, ip6addr=$ip6addr" >> /tmp/464xlatcfg.log
echo "[DEBUG] ip6addr after 464xlatcfg: $ip6addr" > /dev/console
if [ -z "$ip6addr" ]; then
echo "[ERROR] CLAT configuration failed" > /dev/console
proto_notify_error "$cfg" "CLAT_CONFIG_FAILED"
proto_block_restart "$cfg"
return
fi
proto_init_update "$link" 1
echo "[DEBUG] Initialized proto update for link: $link" > /dev/console
proto_add_ipv4_route "0.0.0.0" 0 "" "" 2048
echo "[DEBUG] Added IPv4 route" > /dev/console
proto_add_ipv6_route $ip6addr 128 "" "" "" "" 128
echo "[DEBUG] Added IPv6 route for ip6addr: $ip6addr" > /dev/console
proto_add_data
echo "[DEBUG] Adding data to proto" > /dev/console
[ "$zone" != "-" ] && json_add_string zone "$zone"
echo "[DEBUG] Added zone: $zone" > /dev/console
json_add_array firewall
json_add_object ""
json_add_string type nat
json_add_string target SNAT
json_add_string family inet
json_add_string snat_ip 192.0.0.1
json_close_object
echo "[DEBUG] Added NAT firewall rule" > /dev/console
json_add_object ""
json_add_string type rule
json_add_string family inet6
json_add_string proto all
json_add_string direction in
json_add_string dest "$zone"
json_add_string src "$zone"
json_add_string src_ip $ip6addr
json_add_string target ACCEPT
json_close_object
echo "[DEBUG] Added IPv6 inbound rule" > /dev/console
json_add_object ""
json_add_string type rule
json_add_string family inet6
json_add_string proto all
json_add_string direction out
json_add_string dest "$zone"
json_add_string src "$zone"
json_add_string dest_ip $ip6addr
json_add_string target ACCEPT
json_close_object
echo "[DEBUG] Added IPv6 outbound rule" > /dev/console
json_close_array
proto_close_data
echo "[DEBUG] Closed proto data" > /dev/console
proto_send_update "$cfg"
echo "[DEBUG] Sent proto update for cfg: $cfg" > /dev/console
}
proto_464xlat_teardown() {
echo "[DEBUG] Tearing down 464xlat for cfg: $1" > /dev/console
464xlatcfg "464-$1"
}
proto_464xlat_init_config() {
echo "[DEBUG] Initializing 464xlat config" > /dev/console
no_device=1
available=1
proto_config_add_string "ip6prefix"
proto_config_add_string "ip6addr"
proto_config_add_string "tunlink"
proto_config_add_string "zone"
}
[ -n "$INCLUDE_ONLY" ] || {
echo "[DEBUG] Adding protocol 464xlat" > /dev/console
add_protocol 464xlat
}
Restart network log：
root@router:/lib/netifd/proto# /etc/init.d/network restart
[ 5137.215511] br-vlan1: port 1(eth1) entered disabled state
[ 5137.223026] IPv6: ADDRCONF(NETDEV_UP): br-vlan1: link is not ready
[ 5137.223056] IPv6: force enable br-vlan1 ipv6
[ 5137.228871] device eth1 left promiscuous mode
[ 5137.232975] br-vlan1: port 1(eth1) entered disabled state
[ 5137.245951] IPv6: ADDRCONF(NETDEV_UP): eth1: link is not ready
[ 5137.246387] device eth2 left promiscuous mode
[ 5137.250851] br-vlan1: port 2(eth2) entered disabled state
[ 5137.264370] IPv6: ADDRCONF(NETDEV_UP): eth2: link is not ready
[ 5137.369764] br-wan: port 1(eth0) entered disabled state
[ 5137.377214] IPv6: ADDRCONF(NETDEV_UP): br-wan: link is not ready
[ 5137.377357] device eth0 left promiscuous mode
[ 5137.382486] br-wan: port 1(eth0) entered disabled state
[ 5137.394279] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[DEBUG] all par: dump
[DEBUG] Adding protocol 464xlat
[DEBUG] Initializing 464xlat config
[ 5140.924971] device eth1 entered promiscuous mode
[ 5141.132211] device eth2 entered promiscuous mode
[ 5141.338585] device eth0 entered promiscuous mode
[ 5141.339904] IPv6: ADDRCONF(NETDEV_UP): br-wan: link is not ready
464xlat setup wan6_4 {"proto":"464xlat","ifname":"br-wan","ip6prefix":"2001:db8:85a3::\/96","ip6addr":"2001:db8:85a3::2","tunlink":"wan","zone":"wan"}
[DEBUG] all par: 464xlat setup wan6_4 {"proto":"464xlat","ifname":"br-wan","ip6prefix":"2001:db8:85a3::\/96","ip6addr":"2001:db8:85a3::2","tunlink":"wan","zone":"wan"}
[DEBUG] Adding protocol 464xlat
[DEBUG] proto_464xlat_setup: wan6_4
[DEBUG] Starting proto_464xlat_setup
[DEBUG] cfg: wan6_4, iface: , link: 464-wan6_4
[DEBUG] Parsed JSON variables:
[DEBUG] ip6addr: 2001:db8:85a3::2, ip6prefix: 2001:db8:85a3::/96, tunlink: wan, zone: wan
[DEBUG] Zone set to: wan
464xlat teardown wan6_4 {"proto":"464xlat","ifname":"br-wan","ip6prefix":"2001:db8:85a3::\/96","ip6addr":"2001:db8:85a3::2","tunlink":"wan","zone":"wan"}
[DEBUG] all par: 464xlat teardown wan6_4 {"proto":"464xlat","ifname":"br-wan","ip6prefix":"2001:db8:85a3::\/96","ip6addr":"2001:db8:85a3::2","tunlink":"wan","zone":"wan"}
[DEBUG] Adding protocol 464xlat
[DEBUG] Tearing down 464xlat for cfg: wan6_4
[ 5143.954614] br-vlan1: port 1(eth1) entered forwarding state
[ 5143.959312] br-vlan1: port 1(eth1) entered forwarding state
[ 5145.694581] br-wan: port 1(eth0) entered forwarding state
[ 5145.699276] br-wan: port 1(eth0) entered forwarding state
[ 5145.710029] IPv6: ADDRCONF(NETDEV_CHANGE): br-wan: link becomes ready
proto_dhcpv6_setup: wan br-wan
[ 5145.954458] br-vlan1: port 1(eth1) entered forwarding state
[ 5147.694462] br-wan: port 1(eth0) entered forwarding state```