From: Nick Hilliard <n...@foobar.org> >If you don't rewrite your transit providers' origin, then you are telling >them that they can directly influence your exit discrimination policy on >the basis of a purely advisory flag which has no real meaning.
On what precisely do you base the idea that a mandatory transitive attribute of a BGP prefix is a "purely advisory flag which has no real meaning"? I encourage you to reconsider that opinion - it's actually a useful attribute, much the way that MED is a useful attribute. Many providers re-write MED, and apparently some re-write ORIGIN. Neither of those is "network abuse" - it's more accurately described as "network routing policy." As has been stated here before: your network, your rules. David Barak Need Geek Rock? Try The Franchise: http://www.listentothefranchise.com
