Suspecious anycast prefixes
woody at pch.net
Tue May 3 10:17:20 UTC 2011
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On May 2, 2011, at 12:35 PM, Joe Abley wrote:
> It's perhaps worth noting that there is work in the IETF to recommend that every prefix originated as part of an anycast cloud uses a unique origin AS (see <http://tools.ietf.org/html/draft-ietf-grow-unique-origin-as-00>). I'm not personally convinced of the arguments in the draft, but mentioning it in this thread seems reasonable.
I'm also not convinced of the arguments in the draft, since it argues that it would be a best-practice for me to originate my address space from more than 8,000 different ASNs, when I currently do just fine advertising it from three. I'd much rather there not exist a document that clueless people can point at and claim is a "best common practice" when it's neither best nor common.
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