Interesting Graph - Decrease in 6to4?

Emile Aben — Apr 21, 2010 09:35 AM
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We have been measuring the number of clients connecting to over IPv6 and made some interesting observations.

The percentage of users using IPv6 to connect to 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 via IPv6 (daily bins)



interesting says:
Jun 08, 2011 05:24 PM
Hmm. Interesting, shouldn't resolving and ordering by preference (which should be lower for tunneled connections like teredo), be done at OS level than browser level? This would indicate actually a bug in Windows resolver probably, if Opera fix create such big difference.
James Fry says:
Nov 11, 2013 08:46 PM
Not really, an application can specify which outgoing interface to use.
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