OpenWrt IPv6 有地址却提示网络不可达：一次 mwan3 策略路由排查
WAN6 had obtained an IPv6 address, but when pinging a public IPv6 address on OpenWrt, it immediately returned: ping: sendto: Network unreachable The cause turned out to be an unreachable rule with a mark that was consistent with mwan3. After deleting it, IPv6 connectivity was restored. This case demonstrates that seeing a default route does not mean actual traffic will necessarily use it. This article documents an actual troubleshooting session. The public source address has been replaced with an example address used in the document; device names, rule priorities, and marks should be based on your own device. The uninstallation commands apply to OpenWrt installations that use opkg. ...