On Mon, Apr 04, 2016 at 08:56:34PM +0000, David Huberman wrote: > ARIN has traditionally had a large number of AS numbers (almost all > 2-byte) in the "hold" bucket. These are ASNs which have been revoked > for years due to non-payment and separation from the RSA. But they're > still found in the DFZ. > > Can't ARIN ask requestors who say they need 2-bytes if they'd be > willing to accept a 2-byte ASN that may have route announcements > present in the DFZ, and due to circumstances blah blah blah? It boils > down to "we have 2-byte ASNs, but they're not quite as clean as one > might expect - is that ok?", because I'm pretty sure the answer will > always be "HECK YEAH!"
> ASNs aren't quite like IP addresses in this context. There's no > conflict I know of unless the new registrants tries to directly > exchange routes with the old registrant, which is mathematically > highly improbable. (Assuming at least one of two parties is running their network with default settings..) Indrect route exchange will also fail due to AS_PATH loop prevention. ("Phase 2: Route Selection" RFC4271). The idea is interesting, but I wonder if there will be cases where the new ASN holder just can't get the old ASN holder's peers & upstreams to disconnect the illegitimately user of the ASN, causing operational issues. Kind regards, Job _______________________________________________ PPML You are receiving this message because you are subscribed to the ARIN Public Policy Mailing List (ARIN-PPML@arin.net). Unsubscribe or manage your mailing list subscription at: http://lists.arin.net/mailman/listinfo/arin-ppml Please contact i...@arin.net if you experience any issues.