I am using an ASUS RT-AX58U in AP mode (NOT router mode) with Asuswrt-Merlin 386.3_2. In this configuration, the AP does not forward IPv6 router advertisements to WiFi clients from IPv6 routers on the same layer 2 network. With any other WiFi APs (e.g. Linksys, Ubiquiti, Devolo) connected to the...