On Jun 13, 2019, at 8:24 AM, Job Snijders <job@instituut.net> wrote:
On Thu, Jun 13, 2019 at 11:18 Warren Kumari <warren@kumari.net <mailto:warren@kumari.net>> wrote: On Thu, Jun 13, 2019 at 9:59 AM Joe Abley <jabley@hopcount.ca <mailto:jabley@hopcount.ca>> wrote:
Hey Joe,
On 12 Jun 2019, at 12:37, Joe Provo <nanog-post@rsuc.gweep.net <mailto:nanog-post@rsuc.gweep.net>> wrote:
On Wed, Jun 12, 2019 at 04:10:00PM +0000, David Guo via NANOG wrote:
Send abuse complaint to the upstreams
...and then name & shame publicly. AS-path forgery "for TE" was never a good idea. Sharing the affected prefix[es]/path[s] would be good.
I realise lots of people dislike AS_PATH stuffing with other peoples' AS numbers and treat it as a form of hijacking.
Actually, I've been meaning to start a thread on this for a while.
I have an anycast prefix - at one location I'm a customer of a customer of ISP_X & ISP_Y & ISP_Z. Because ISP_X prefers customer routes, any time a packet touches ISP_X, it goes to this location, even though it is (severely) suboptimal -- things would be better if ISP_X didn't accept this route in this location.
Now, the obvious answer of "well, just ask your provider in this location to not announce it to ISP_X. That's what communities / the telephone were invented for!" doesn't work for various (entirely non-technical) reasons...
Other than doing path-poisoning can anyone think of a way to accomplish what I want? (modulo the "just become a direct customer instead of being a customer of a customer" or "disable that site", or "convince the AS upstream of you to deploy communities / filters"). While icky, sometimes stuffing other people's AS in the path seems to be the only solution...
Given the prevalence of peerlock-style filters at the transit-free club, poisoning the path may result in a large outage for your prefix rather than a clever optimization. Poisoning paths is bad for all parties involved.
Kind regards,
Job
Job, Permit me to apply some reflective listening to your statement: What I heard you say is: “I’m not going to offer a solution to your problem, but you shouldn’t use the one you have that currently works because some things my friends and I are doing react poorly to it and you may suffer some consequences as a result.” Owen