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invalid prefixes advertised

We are testing a new protocol and expected IANA to make the address
block assignment by now.  The proposed block to IANA is 2003::/16.  A
copy of the protocol draft can be found at:


Sorry if this is causing anyone any grief.


-----Original Message-----
From: Jan Oravec [mailto:[email protected]] 
Sent: Tuesday, December 04, 2001 1:54 PM
To: [email protected]
Subject: invalid prefixes advertised


I see a lot of invalid prefixes advertised in BGP table received from
several peers of XS26 network.

If I ignore non-aggregated prefixes received, the following invalid
are in global BGP:

2001:4b00::/35 0 8277 15589 11630 i
- not delegated

2001:a00::/35 0 8277 15589 1275 i
- according to IANA, not delegated
2002:a00::/35 0 8277 15589 1275 i
- same AS source - 1275 - configuration error? -> 6to4 of
2003::/16     0 8277 45328 278 237 5761 ?
- according to whois.arin.net:
$ whois -a 5761
Microsoft Corporation (ASN-MSN-SEATTLE)
   One Microsoft Way
   Redmond, WA 98052-6399

   Autonomous System Name: MSN-SEATTLE
   Autonomous System Number: 5761

      Whipple, David  (DW727-ARIN)  [email protected]
- according to IANA, 2003::/16 is not delegated
  peers of Microsoft, please filter bogus updates or cancel peering

Best Regards,

Jan Oravec
XS26 - 'Access to IPv6'
[email protected]