@xyz111 I have an Openwrt-based setup that I am running on a Raspberry Pi 4b and the WAN MAC address is from a USB Ethernet adapter from TP-Link. The Raspberry Pi onboard Ethernet is for LAN.
First is the ONT MAC authentication with OLT, which, if the OLT doesn't enforce, you are good to go with any ONT of your choice, or you have to ask LCO to reset it. Then comes the WAN MAC, which you can either copy from ONT or reset, and they will lock the new WAN MAC of the router upon the next reboot.
Rest, I leave it for you to interpret.
Also, MAC address is a 48-bit identifier and is different for each device. You can search "mac address bits" to get more info.
First is the ONT MAC authentication with OLT, which, if the OLT doesn't enforce, you are good to go with any ONT of your choice, or you have to ask LCO to reset it. Then comes the WAN MAC, which you can either copy from ONT or reset, and they will lock the new WAN MAC of the router upon the next reboot.
Rest, I leave it for you to interpret.
Also, MAC address is a 48-bit identifier and is different for each device. You can search "mac address bits" to get more info.