On Jul 28, 2011, at 11:41 PM, Michel Py wrote: > IMHO, the only valid stats we can gather are either from a large content > provider (which is why Lorenzo's numbers are so interesting) or from a > large eyeball ISP. Cisco, Juniper, Apple, the academia, the IETF, etc > are NOT valid places to collect data. I think all of the numbers are interesting, but the numbers shouldn't be separated from the conditions under which they were collected. It's reasonable to say "Google is now seeing X% 6to4 traffic" or "My native v6 enterprise network is seeing Y% 6to4 traffic." What's not reasonable is to say that observations under one set of conditions are indicative of the whole network. Even observations made at several points by a large transit carrier might not be indicative of conditions on the other side of the world. It's also dubious to extrapolate from a few data points and call it a long term trend, because we're in a very early phase of v6 deployment (and v4 exhaustion), and there are many factors which could have a large but unpredictable influence on future use of IPv4 vs IPv6. Keith _______________________________________________ Ietf mailing list Ietf@xxxxxxxx https://www.ietf.org/mailman/listinfo/ietf