bogus route: 2001::/16

[Jorgensen, Roger]

Hi,

First some aspath seen from us (6830 and 8733)

nl-ams-re-02#show bgp ipv6 2001::/16
BGP routing table entry for 2001::/16, version 81675
Paths: (3 available, best #3)
  Advertised to non peer-group peers:
  2001:730::1:3 2001:730::1:7 2001:730::1:9 2001:730::1:F 2001:730::1:19
  2001:730::1:21 2001:730::1:23 2001:730::1:29
2001:730:0:2:2D0:B7FF:FE3E:AAE2
  2001:740:0:102::1:0 3FFE:2000:0:40F::22F 3FFE:2501:100::21
3FFE:2900:1:5::1
  3FFE:8270:0:1::52 3FFE:8271:201:2037::1 3FFE:82E2:0:101::1
  15589 513 2200 2611 6774 4589 680 1275 762 6175 6435 109 1251 3265 7521
7521 7521 7521 4697 3425 293 4554 8954 10566 5408 2549 3274 1103,
(received & used)
    2001:730::1:F from 2001:730::1:F (192.168.1.12)
      Origin incomplete, localpref 100, valid, external
  20834 513 2200 2611 6774 4589 680 1275 762 6175 6435 109 1251 3265 7521
  7521 7521 7521 4697 3425 293 4554 8954 10566 5408 2549 3274 1103,
  (received & used)
    3FFE:8270:0:1::52 from 3FFE:8270:0:1::52 (80.71.0.50)
      Origin incomplete, localpref 100, valid, external
  8733 2611 6774 4589 680 1275 762 6175 6435 109 1251 3265 7521 7521 7521
  7521 4697 3425 293 4554 8954 10566 5408 2549 3274 1103, (received & used)
    2001:730::1:5 from 2001:730::1:5 (195.162.197.71)
      Origin incomplete, localpref 100, valid, external, best

That's what I see from 6830, from 8733 (also us)

be-bru-re-01>show bgp ipv6 2001::/16
BGP routing table entry for 2001::/16, version 271023
Paths: (1 available, best #1)
  Advertised to non peer-group peers:
  2001:730::1:4 3FFE:2501:100::1F
  2611 6774 4589 680 1275 762 6175 6435 109 1251 3265 7521 7521 7521 7521
  4697 3425 293 4554 8954 10566 5408 2549 3274 1103, (received & used)
    3FFE:80B0:1000:0:260:8FF:FE69:8E7E from 3FFE:2501:100::13
(195.162.197.69)
      Origin incomplete, localpref 100, valid, internal, best


Something else that might be related to this, I've noticed long and often
broken ASPATH several times (used ASPATH www2.ipv6.chello.com/bgp-stats that

show a few of them) and they are almost always coming from Belgium (through
8733 for us).

I can't explain where or why or anything more than the people before me has 
done, just wanted to show what we see since many seems to get 2001::/16 
through us. Will have a look at 8733 to make sure there isn't anything there

that cause problems.



---
Roger Jorgensen (rjorgensen@chello.com)
System Engineer @ engineering chello Broadband
handles: ROJO1-6BONE ROJO9-RIPE RJC10-NORID


> -----Original Message-----
> From: Russell King [mailto:rmk@arm.linux.org.uk]
> Sent: Friday, January 18, 2002 9:55 PM
> To: Jan Oravec
> Cc: Ronald van der Pol; 6bone@ISI.EDU
> Subject: Re: bogus route: 2001::/16
> 
> 
> On Fri, Jan 18, 2002 at 06:06:23PM +0100, Jan Oravec wrote:
> > SKBYS-0000> sh bgp 2001::/16
> > BGP routing table entry for 2001::/16
> > Paths: (3 available, best #2, table Default-IP-Routing-Table)
> >   Advertised to non peer-group peers:
> >   2001:658:0:1::1 3ffe:80e8:1:3::2 3ffe:80ef:1:: 
> 3ffe:80ef:100:: 3ffe:80ef:800:: 3ffe:80ef:900::
> >   5594 2200 2611 6774 4589 680 1275 762 6175 6435 109 1251 
> 3265 7521 7521 7521 7521 4697 3425 293 4554 8954 10566 5408 
> 2549 3274 1103, (Received from a RR-client)
> >     3ffe:80e1:8000:10::2 from 3ffe:80ef:1:: (195.168.1.69)
> >       Origin incomplete, localpref 100, valid, internal
> >       Last update: Fri Jan 18 13:35:32 2002
> > 
> >   6830 8733 2611 6774 4589 680 1275 762 6175 6435 109 1251 
> 3265 7521 7521 7521 7521 4697 3425 293 4554 8954 10566 5408 
> 2549 3274 1103, (Received from a RR-client)
> >     2001:730:3::1:e from 3ffe:80ef:300:: (62.140.29.9)
> >       Origin incomplete, localpref 100, valid, internal, best
> >       Last update: Fri Jan 18 12:59:03 2002
> > 
> >   6830 8733 2611 6774 4589 680 1275 762 6175 6435 109 1251 
> 3265 7521 7521 7521 7521 4697 3425 293 4554 8954 10566 5408 
> 2549 3274 1103, (Received from a RR-client)
> >     2001:730:3::1:e from 3ffe:80ef:900:: (62.140.29.9)
> >       Origin incomplete, localpref 100, valid, internal
> >       Originator: 62.140.29.9, Cluster list: 62.89.127.130 
> >       Last update: Fri Jan 18 12:59:00 2002
> 
> My path for 2001::/16 is:
> 
> me:  45328 8277 8379 4589 6774 8733 6830 6726 1275 762 6175 
> 6435 109 1251 3265 7521 7521 7521 7521 4697 3425 293 4554 
> 8954 10566 5408 2549 3274 1103
> you:       6830 8733 2611 6774    4589 680    1275 ... etc ...
> 
> Here's a couple of other AS paths for 2001::/16:
> 
>        6939 5609 6830 8733 2611 6774 4589 680 1275 ... etc ...
>            8277 8379 4589 6774 8733 6830 6726 1275 ... etc ...
> 
> Everything from AS1275 to AS1103 is identical in each case.  Hope this
> helps.
> 
> -- 
> Russell King (rmk@arm.linux.org.uk)                The 
> developer of ARM Linux
>              http://www.arm.linux.org.uk/personal/aboutme.html
>