In your letter dated Tue, 19 Jul 2011 08:26:26 +0900 you wrote: >> Given that each of us reads something different into the definition of HISTO >RIC, is there any hope that this thread will ever converge? > >I don't see any "progress". > >We may just have to blacklist any resolvers that have 6to4 clients >behind them and leave it at that. I don't think there is any need to be overly dramatic about it. I firmly belive that 6to4 should be moved to historic. But at the same time, I was looking for a poorly performing IPv6 connection to test happy eyeballs and didn't find it. 6to4 can just work. So a less aggressive approach might be in order. (If you look at the numbers, there are fewer and fewer 6to4 connections to dual-stack sites because modern operating system releases will prefer IPv4 over 6to4. Of the users who didn't upgrade, there is about 20% with a completely broken 6to4 setup. What remains is slightly higher latency due to non-optimal placement of relays) _______________________________________________ Ietf mailing list Ietf@xxxxxxxx https://www.ietf.org/mailman/listinfo/ietf