Is AS reclaimation an option? We don't know how many 'dark' (unadvertised) AS numbers are used as VPN IDs in 2547 contexts. do we care? i.e. does it affect the real public internet. are these not like 1918? nope, they need to be unique... or they SHOULD BE unique (globally unique). As more folks interconnect internally (business mergers, partnerships, things such as this) there will be more clashes on 1918 (raising the evil spectre that is NOT the AC-130, but in fact NAT) and ASN clashes resulting in fragile internal networks needing an ASN swap-out... which is devilishly hard so I've heard. (atleast on a large network)
we either believe in private ip/asn space or we don't. if we do, then this asn usage falls under it.
and how much money will lawers make off the ensuing riot? lawYers will always make money.
sorry. typing while dealing with remote server messes.
but I'm not sure that 'unadvertised' is the metric you want to use here. 'unpaid' might be better.
please see what we promised fnc when we formed arin, slide nine of <http://rip.psg.com/~randy/970414.fncac.pdf>. i think this is perceived as the social contract with the legacy community. and some old legacy dogs are pretty adamant about this, hi jis. and we have both a simple and a more complex compatible transition path to four byte asns. it's ip addresses where we have no compatible transition path. eye on doughnut and all that. randy