[ipv6-wg] Re: Re: [address-policy-wg] Re: Andre's guide to fix IPv6
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bmanning at vacation.karoshi.com
bmanning at vacation.karoshi.com
Thu Dec 1 17:31:10 CET 2005
On Thu, Dec 01, 2005 at 04:53:44PM +0100, Jeroen Massar wrote: > Max Tulyev wrote: > >> Very easy. In the Internet the equivalent of phone numers, the DNS names > >> are alleady portable - so you can easily switch ISP and keep your email > >> address and URLs without renumbering. > > > > Imagine you are a hosting provider with, say, 10000 sites (domains), 3000 of > > them is even not under your control. You have 10 servers to host them (i.e. > > you need 10 IPs). > > > Changing ISP is really easy? > > > > To be a LIR and grab /20 if really need only /28? > > With a /28 you won't appear far in the current IPv4 routing tables > either. Most sites filter prefixes longer than 24. > How do you currently use such a /28 as PI? Or did you become a LIR and > got that /20, just like is possible now with IPv6? > > As an exercise for the readers try to remember why there are filters on > IPv4 /24 boundaries and the try to figure out why there are quite a > number of people not wanting IPv6 PI to fill their IPv6 routing tables. > > Greets, > Jeroen one might also ask why a RIB/FIB entry has more relevance for one size prefix instead of another. --bill
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