On Thu, Jun 9, 2011 at 12:01 PM, Brian E Carpenter < [email protected]> wrote:
> > In a similar way as Geoff measured 6to4 - looking at SYNs. I suspect that > > the answer will be that much fewer users have configured tunnels than > 6to4, > > and that the failure rate is much lower. > > Er, I'm currently on 2001:388:f000::xxxx > Do you have an algorithm that will tell you whether that is native > or a configured tunnel? Not perfectly. But you can look at things like MSS and MTU.
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