This is a home user question. We used to have a Sky Router which broke. I have since changed it to a Netgear DGNV1000 which was a pain as Sky never give out the login details. The internet does work fine, but found a few issues on mobile devices.
What will happen is facebook and Youtube and it seems any other https://
site will suddenly stop working. We then have to reconnect our devices then they will work again for one refresh of facebook and one video on youtube.