IPv6 Talk with Carl Wuyts. Carl is very much involved with IPv6 within Telenet, a large ISP in Belgium. An ISP has a different perspective on IPv6 than many other companies do. They have to implement CGN just to make IPv4 work. That comes at a cost, but of course they also have to make sure that the content on the Internet is reachable by their users. Telenet is close to offering 100% of their users IPv6 access, and actually it can be quite refreshing to look at the ISP perspective.