When I create a new interface using’‘dhcpv6’’ as I often do on other openwrt routers, it doesn’t get the ipv6 address. When I restart the router, the interface “wwan6” becomes “unsupported protocol type” and asks me “install protocol extension” even though I have installed “luci-proto-ipv6” and “luci-proto-ppp"
When I set the interface “wwan” to dhcpv6 client mode, it seems to be able to correctly get a “scope:global” ipv6 address, but it can’t ping to the address that should be connected, or even connect to the previous level gateway address. When I restarted the router and it automatically connected to the WiFi that should be relayed, wwan changed back to “dhcp client” mode instead of the dhcpv6 client I set.
I have achieved my desired goals on other native openwrt routers, but I have encountered setbacks on the AR750S. I am looking forward to knowing the reasons for this and I sincerely thank those who can help me solve this problem.