Hi,
We have carefully read your comments regarding an issue relating to YouTube and other streaming sites with some recent D-Link routers (including the DIR-835) connected to Videotron's network. This problem is related to IPv6 MTU and has been confirmed by D-Link. A fix will be available in future versions of the firmware for these routers (versions above 1.03 for the DIR-835).
The temporary workaround to solve this issue is to select "6rd" rather than "Auto Detection" as the IPv6 Internet Connection:
1. Login to your routeur web interface (http://192.168.0.1) with the "admin" username.
2. Select Setup at the top, then IPv6 on the left.
3. Click "Manual IPv6 Internet Connection Setup" near the bottom of the page.
4. In the field "My IPv6 Connection is:", select 6rd (second-last option in the menu).
5. Hit "Save Settings". You will be asked to reboot the routeur.
This issue does not affect Videotron-branded DIR-825 routers.
We hope this information will be helpful to you and we remain available to answer your questions regarding our products and services by phone, chat and email: http://bit.ly/LNGzRk, we also available on Facebook/Videotron and Twitter @Videotron.