@ManicDevil You don't have to be connected to your home Wi-Fi at all time for this to work as expected. Most probably your TP-LInk RE has dropped it wireless connection to your main router for some...

@Guils If you plug two different pairs of PLCs to two different LAN ports of your router, you'll have two separate PLC lines whatever their negotiated speed is.

@omazza The problem you've described is called hairpinning or NAT loopback. Most probably you can't login directly into tplinkdns.com. Actually I'm using no-ip service and I'm quite happy with it.

omazza wrote ... Where I define another one ? Only by login with TP-Link ID ? Why I can't login with TP-Link ID ? Why I can't simply login to tplinkcloud.com and defined a new URL (domain name) there...

@Leo1319 Yes, if you enable DHCP on the ONT most probably it would brake its bridge mode. I believe that you don't login often into the ONT WebGUI, so when the time comes you can always connect your...

@Leo1319 169.254.x.y address is a link-local IP address and usually you see it if a device is unable to get an IP address using DHCP. I'm affraid that you may not be able to access the ONT IP address...