bogus route: 2001::/16

[ISHII Toshinori]

At Fri, 18 Jan 2002 18:06:23 +0100,
Jan Oravec wrote:
> 
> We see 2001::/16, someone has buggy BGP implementation which creates such
> "long paths", we can see a lot of them.
> 
> 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
> 
> These announcements of these long paths are stable (actually 4 hours up).

It looks stable but....

I'm in as7521 but I do not aspath-prepend now.
I stopped aspath-prepend 2 days ago. (> 4hours)

Someone holds old incorrect bgp table and keep it.

-- 
ishii @ mfeed.ad.jp