Trouble reaching whois.ripe.net and www.ietf.org

[Niels Bakker]

* stig.venaas at uninett.no (Stig Venaas) [Tue 17 Oct 2006, 10:00 CEST]:
>I'm getting fed up with this broken routing... We can't reach either of 
>whois.ripe.net or www.ietf.org at the moment.
>
>whois.ripe.net has address 2001:610:240:0:193::202. We get this as a /42 
>prefix via GEANT, Level 3, and Tiscali:
>
>*> 2001:610:240::/42
>                     2001:948:0:F042::1
>                                                            0 2603 20965 
>3356 3257 3333 i
>
>Our best connectivity to RIPE would probably be via SURFnet from which 
>we get 2001:610::/32, but we end up using this more specific. Not only
>is the path in-optimal, but it appears to stop in level3's network.

Interestingly enough, I do get the /42 from SURFnet:

BGP routing table entry for 2001:610:240::/42, version 2284609
[..]
  1103 3333, (aggregated by 3333 193.0.0.56), (received & used)
    2001:7F8:1::A500:1103:1 from 2001:7F8:1::A500:1103:1 (145.145.127.2)
      Origin IGP, localpref 100, valid, external

There's a case here a normal IPv6 multihoming address policy that I will 
not make on this list :)


	-- Niels.

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