On Thu, Jan 9, 2014 at 2:00 PM, John R Levine <johnl@xxxxxxxxx> wrote: >> There are pathological (aka: stupid) cases of multihomed to 2 isps, >> getting static-routing of each isp's PA space on only that one ISP... >> and default routing up both pipes... but really that's just broken and >> dumb, so getting customers to fix this by filtering is a fine answer. > > > As I said in the original message, calling the customers stupid is not > useful. right, my assumption is that some marketting/pr/customer-service person would actually tell the customers a form of: "Hey, do you like reliability? we do to... we also like cleaner internets, we're going to filter outbound traffic from you for the sources we should see from you, currently that's: A/24 and B/24... if we should add more, speak up by <60days from now>" > They know they're doing asymmetrical routing, and they're paying the ISP a > lot of money to do so. > sure, they are also paying for reliability and lack of problems with the traffic they send, so making that part the star, not their stupidty is probably the way forward. > > Regards, > John Levine, johnl@xxxxxxxxx, Taughannock Networks, Trumansburg NY > Please consider the environment before reading this e-mail.