Interesting Graph - Decrease in 6to4?
The percentage of users using IPv6 to connect to www.ripe.net for the last month is a bit atypical, which is good news and bad news. The bad news is that overall growth seems to stagnate a bit. The good news is that native IPv6 usage is still increasing and we see a drop in 6to4 (represented as a blue line on Figure 1 below). It looks like this is caused by the release of a new version of the Opera web browser early in March 2010, which doesn't prefer tunneled IPv6 (like 6to4 or Teredo) over IPv4 anymore. This is a good thing, but it has this strange effect on the IPv6 usage of clients as seen from web servers.
Figure 1: Percentage of clients connecting to www.ripe.net via IPv6 (daily bins)