Re: Prepending with another ASN you don't own

...

this is called path poisoning. an italian friend used it in his phd thesis. a few friends and i used it to detect use of default across the internet.

I've done this in the past as a work-around for insufficient BGP community support. Just prepending the AS I wanted to ignore the paths.

But, if the problem is an anycast CDN choosing a sub-optimal path to reach you, you might try reaching out to them. They're probably just as, if not more interested, in getting their traffic to you as efficiently as possible.

apologies. i should have been more explicit. both of the examples were using path poisoning for routing research. it is not a technique i would reccommend in normal operations. randy