Sprint (1239) blackhole ? Or bogus /32 route ?

Thu Sep 26 18:40:17 UTC 2002

At 02:27 PM 26/09/2002 -0400, Vinny Abello wrote:

>Yep, you're right. Looks like they might blackholing the /32 with a null 
>route on their network somewhere.

To mitigate the impact, I am sending 199.212.134.0/24 as a more specific 
route through my other transit provider (15290) who does not transit with 
1239. I am trying to limit the damage to just inside 1239 and those single 
homed off 1239.  I am sending 199.212.134.0/23 through Telus (852) who also 
has transit with AS1239.

Someone else told me off list that Sprint usually blackholes with ACLs and 
not  NULL0 routing. So perhaps an IGP issue ?  If so I would have thought 
others would be seeing strange things as well.

         ---Mike