Any luck resolving this one? I tried to look up IPTV connections and didn't find a lot of info out there. I'm admittedly not familiar with IPTV WAN connections...just seems like the ASUS router isn't handling something properly. I definitely noticed my former ASUS router didn't ever see TP-L switches as clients, and I always had to assign the IP and gateway manually to the switches themselves. Have you tried posting this in the ASUS forums or contacting their support in relation to this prolem? SNBforums is another good resource and I know there are a lot of German users that frequent that forum who might be able to help.