- 2016-08: 6.8% IPv6
- 2016-12: 14.8% IPv6
So + 8% in four months time, or + 2% per month. Well done, KPN!
That could mean KPN could be at 14% + 12*2% = 38% IPv6 traffic at the end of 2017. We'll see in one year time.
Source of KPN graph: http://www.worldipv6launch.org/apps/ipv6week/measurement/images/graphs/KPN.png
FWIW: in the last 8 months the other Netherlands ISP Ziggo has only gone down. See here