berni at birkenwald.de
Tue Feb 14 23:35:44 CET 2006
Bernhard Schmidt wrote:
>>> This means that for them, or rather, their 6to4 gateway, my
>>> 2001:1af8::/32 address is unreachable, but 3ffe:2500::/32 works. WTF?
>> Whois shows the IPv4 address 126.96.36.199 belongs to HopOne
>> Internet. They have a traceroute server which I used to traceroute
>> to 188.8.131.52. It looks like the route currently leads to
>> teleport-iabg.de. Is there anyone from there on this list who could
>> check their route back to 2001:1af8::/32?
> Great, that is one of mine, once across the galaxy^Watlantic ocean. I
> can reach Iljitsch just fine though:
Something else is odd here, too. The box the 6to4 relay is running on
has IOS 12.4(5) and does Netflow v9 export to the current nfdump/nfsen
beta (_very_ nice tool btw). I see tons of flows with source 2002::/16
and ingress interface = 6to4 tunnel (almost 40k flows today between 6am
and 11pm), but only one flow with 2002:42EB:B46B::2 ... as destination
address when I tested it from my box here.
My guess is that they don't use the anycast address (maybe because it
gets routed to Europe) but a hardcoded relay. Which is broken. Nothing
more to say without a trace from their side.
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