/etc/config/network
config globals 'globals'
option ula_prefix 'fdc9:0d7a:4c66::/48'
config interface 'lan'
......
option ip6assign '60'
config interface 'wan6'
option ifname '@wan'
option proto 'dhcpv6'
/etc/config/dhcp
config dhcp 'lan'
......
option dhcpv6 'hybrid'
option ra 'hybrid'
option ndp 'hybrid'
config dhcp 'wan6'
option interface 'wan'
option dhcpv6 'hybrid'
option ra 'hybrid'
option ndp 'hybrid'
option master '1'
/etc/config/firewall
config zone
option name 'wan'
list network 'wan'
list network 'wan6'
......
config rule
option name 'Allow-ICMPv6-Input'
option src 'wan'
option proto 'icmp' ......
list icmp_type 'router-solicitation'
list icmp_type 'neighbour-solicitation'
list icmp_type 'router-advertisement'
list icmp_type 'neighbour-advertisement'
config forwarding
option dest 'wan'
option src 'lan'
改好后，重启网络 /etc/init.d/network restart
测试
ping6 ipv6.google.com
traceroute6 ipv6.google.com #这个只能在电脑上试
这个配置在 TP-Link WR841n v7.1 和 Netgear WNDRMacv2 上都成功。
nat6
https://wiki.openwrt.org/doc/howto/ipv6.nat6