I have a Thomson TG789vn v2 router and a weird way ISP (ASK4, UK) wants me to use it.
They are telling me to connect their cable to Ethernet 1 slot and disable DHCP on the router.
When I do that some magic happens and the router no longer shows up in my Ethernet connection details, instead there is a 10.x.x.x address, I can no longer access neither the router nor the network share I had on it, when I try to ping either of those I am getting a "Destination host could not be reached" reply from the 10.x.x.x gateway. ISP also requires to register every newly connected device under my account on their portal.
When I plug their cable into the WAN port I end up on an error page on their webserver when I try any kind of connection.
So how do I go about it to have my network share working?