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Re: IPv6 Wow
On 13/10/2008, at 7:18 PM, Mikael Abrahamsson wrote:
On Mon, 13 Oct 2008, Nathan Ward wrote:
I've not heard that, I'll be interested if someone can confirm?
Perhaps certain vendors disable IPv6 because of the lack of relays etc. in the network causing performance problems.
Perhaps a good way to do it is advertise outside Europe, but have the providers that get your advertisement out there prepend their AS a few times as it leaves. That way, US providers will still prefer US 6to4 relays (ie lower latency) but any who don't get a 184.108.40.206/24 route from the US will us your relay in Europe. Kinda gets you best of both worlds.
Teredo and 6to4 is easy - translate the addresses to IPv4 and geolocate with maxmind geoip or something.
IPv6 is harder, you have to build a geolocation database, which I suppose you'd have to build from either origin AS location, or whatever location data the RIR has, for the prefix an address is in.
I have been intending on building a map from Teredo and 6to4 using IPv6 addresses from my bittorrent population stuff, and have that as one output of a periodic study. I'm not sure how to do non-Teredo/6to4 addresses though, so if you've got some ideas there I'll whip something up, the Teredo/6to4 stuff is very simple.
-- Nathan Ward