On Sun, 26 Jun 2016 16:31:17 +0000 joel jaeggli <joelja@xxxxxxxxx> wrote: > It's not clear to me how that would even work. assuming for the sake > of arguement that the IXP by way of configured policy on the > route-server adds this community to a prefix. Here is some detail on how DE-CIX implements it: <https://www.de-cix.net/products-services/de-cix-frankfurt/blackholing/> John