Re: IPv4 to IPv6 transition
Hi On 4 Oct 2007, at 19:50, Keith Moore wrote: http://www.apple.com/jp/downloads/dashboard/networking_security/ ipv420.h tml Each time I see one of these days remaining before Armaggedon counters, I can't help but remember what happened on January 1, 2000: nothing. yes, but that's because people heeded the warnings, and prepared. if the same thing happens wrt IPv4 exhaustion, that will be fabulous. No doubt - that nicely paid off our profession so we should not complain :-) However, that's an intriguing discussion because I almost as often hear quite the contrary argument: indeed, given billions of USD and EUR spent on that issue, one could reasonably argue that the issue was overblown and ask to which degree this statement is true and what would have actually happened without all the pressure. So far, I could not find anything really useful on that (proofs?) but keep on hearing very opposite positions, but it's maybe just me? Does anybody have any established and sustained opinion on that and could provide verifiable if not objective data? How many critical bugs were really found in typical systems? What would have been the real impact? What could have happenned in terms of impact (meaning: it would definitely have happened, not the what-if analysis)? Was the cost higher than the estimated risk? thanks for any pointers artur ___ Ietf mailing list Ietf@ietf.org https://www1.ietf.org/mailman/listinfo/ietf
Re: Stupid NAT tricks and how to stop them.
Today, 90% of the phones in the world are still analog. Including mine, in the capital of California and my buddies' in the heart of Silicon Valley. the (static) statement that 90% of phones are analog seems very wrong to me. according to newest ITU-D estimates, by the end of 2004, there were 1.2 billion land lines, with an average annual growth rate of 5.8% since 1999. this means 18.99 lines per 100 world inhabitants [1]. i ignore how many of these lines are analog, but what is for sure is that the most phones today do not have any lines at all: at the same time, the ITU registered 1.76 billion cellular subscribers, with an annual growth rate of 29% since 1999. This makes up for 27.61 phones per 100 world inhabitants [2]. the vast majority of cellular phones are not analog (GSM+ being the nr 1 technology [3]) and thus probably less than 50% of world phones are analog. i don't know how this relates to the current nat/ipv6/ipv4 discussion, but the argument above could be easily turned into a counter-argument: one could have said that with the original analog phones we were not able to solve the digital divide in the voice service and a new technology has become necessary :-) regards artur [1] http://www.itu.int/ITU-D/ict/statistics/at_glance/main04.pdf [2] http://www.itu.int/ITU-D/ict/statistics/at_glance/cellular04.pdf [3] http://www.gsmworld.com/index.shtml ___ Ietf mailing list Ietf@ietf.org https://www1.ietf.org/mailman/listinfo/ietf
