When an Internet Service Provider turns on IPv6, what amount of IPv6 traffic can it expect? And what kind of traffic? At Swisscom, the largest ISP in Switzerland with a customer base of 1.8 million residential wireline broadband users, large-scale rollout of IPv6 to residential customers began in March 2013. A firmware update prepared a part of the installed customer router base with firmware that supported IPv6. By running a policy on our TR-69 provisioning system, we activated IPv6 over just a few nights.
Right now, 35% of our customers are running IPv6-enabled routers. The IPv6 traffic that they generate accounts for 8.5% of total traffic at peak time (which is at 21:00). Taking the average over an entire day, the share of IPv6 is slightly lower at 7.4%.
Taking only the subset of customers that have activated IPv6, what is the v6-ratio there? In March 2013, 16% of the traffic of those customers was using IPv6. Today, one year later, 24% of the traffic runs over IPv6, after oscillating around 20% for much of the second half of 2013.