The Banana Pi BPI-WiFi 6 Router is an inexpensive router with a dual-core ARM Cortex-A9 processor, four antennas, and three Gigabit Ethernet ports (in addition to the WAN input). Available from Banana ...
So in this flat I have a fiber connection, with a PON. I plugged in my own Archer C6, flashed OpenWRT on it, and flubbed with configuration until I got it to work (I wasn't very familiar with OpenWRT, ...