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On 25/11/10 17:24, Gordon Henderson wrote: > > Estimates I've been reading suggest 5% left by the middle of next year. > They're dwindling fast... Yes, but are those estimates by the same people who said they'd all be gone by the start of 2010 back in 2008, or are they different forecasters. Estimate below is basically policy must change by spring of next year. http://www.potaroo.net/tools/ipv4/index.html It also notes that >35% of all current allocated addresses are not advertised. This doesn't mean they aren't in use, but suggests many of them will either not be in use, or not on the public Internet (so reclamation would not necessarily be a big inconvenience). Also the reason the deadline is suddenly so close is that IANA changed policy to make it so. > I think in 6 months time there will be (another) squeeze and some corps. > may well be persuaded to give up their olde allocations, but that'll > just delay the inevitable. I doubt it will be that soon, there hasn't really been a squeeze yet judging by the vast space that is unused or underused. Yes exhaustion at current trends is inevitable, but it is likely we'll recoup addresses easily enough till ~2015. I think the bigger issue will be equity, when Africa and Asia are wondering "why do we have so few" IPv4 addresses by then. >> Do you see any practical benefits? > > Right now? No. Other than being ready. Ready for what? If you already have an IPv4 address then you are ready in the sense your system will work when exhaustion arrives. >> I'm guessing that given most services >> you have to use a different URL to get IPv6 version of their website, > > There's no reason for that at all. I suspect there are reasons. Have you tried it to see the effect on all the various IPv4 only clients? The "word on the street" is IPv6 connectivity is broken enough that this currently results in breakage as IPv6 enabled clients try IPv6 and fail (when an IPv4 would have "just worked"), although this is fixable by more people - or google - doing just it and forcing people to fix IPv6 routing. -- The Mailing List for the Devon & Cornwall LUG http://mailman.dclug.org.uk/listinfo/list FAQ: http://www.dcglug.org.uk/listfaq