On Thu, Jan 9, 2014 at 2:17 PM, John Levine <johnl@xxxxxxxxx> wrote: >>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>" > > The ISP says the customer responds "if you're not willing to handle > our 20 gigabit account, we're sure we can find someone else who can." > > Also, if you'll review the messages to which you're responding, you'll > note that the customer is often an ISP with customers of its own so > there are far too many ranges to handle manually. yup, as I said, for the case of ISP to ISP (at a point) it's pretty hard to keep the filtering proper/reliable, so I'd pass on most of that. for static customers though, it's pretty simple and for them and their isp to sort this out. -chris