I live in Spain and have a telefonica adsl internet connection. I have a ASUS RT AC66U wireless router and a TP LINK TD 8817 modem router. I have been trying to use the tp link as the modem for the connection but have not had any luck after trying many things. When setting up the modem it gives me the option to put in bridge mode which i have tried and yet it still not working. The best i have managed is to get the wifi sporadicly working but the wired connection not working. Please any step by step instructions would be much appreciated. Thank you.