agree with uutommi. My TD-W9980 is working with IPv6 after I get a beta firmware from TP-Link.

When did you purchase it? I think you can contact tp-link support for a replacement .

DMZ IP address should be the IP address of your camera, 192.168.2.89. The dongle is the internet source for the router. It does affect the traffic. Can you ping 2.194.21.24? it seems this IP address...

Not sure. It seems there is something wrong with the new TD-W8960N. Suggest you to contact support@tp-link.com to do some analyze. By the way, any improvement after you try to change dsl modulation...

You can use access control or parental control to do that. For the green web management page, using access control: http://www.tp-link.com/ca/faq-273.html For the blue web management page, using...

I find a new firmware for TD-W8960N V7 here. http://www.tp-link.com/en/download/TD-W8960N_V7.html#Firmware Give it a try?