Wow, what a nightmare Sky Fibre is. All I wanted to do was replace the crappy Sagem wireless router with my Asus Black Diamond router and it turned out to be a 3 week sprint of reading about Asuswrt, Tomato and udhcpc. Turns out that yes, it's a pain to setup, but it's definitely possible... and with the stock firmware! :-D So, how does it all work? Well, firstly, the Sagem router communicates the with BT OpenReach modem like any other ethernet based device, except it uses MER (MAC Encapsulated Routing) to authenticate the device so that you can't just plug in any old router. What does this actually mean? Well it means the Sagem router sends some very specific information to the OpenReach modem, the client id. This client id is naturally not found in any configuration screen, you have to sniff it out of a DHCP packet to get it. You have to connect your laptop/system via ethernet to the Sagem router and make sure nothing else is connected. Then give your laptop/sy...