Hi Marshall, Thanks for this update about ARIN's work. Comments below. Le 12 oct. 2010 à 17:06, Marshall Eubanks a écrit : > ... > What worries me (and others) is that to give end > users an IPv6 /56 will generally require the assignments as short as /24s > to ISPs, due to the encapsulation of v4 addresses inside of v6 addresses : > > "The 6rd prefix is an RIR delegated IPv6 prefix. It must encapsulate > an IPv4 address and must be short enough so that a /56 or /60 can be > given to subscribers." > > 56 - 32 = a /24 Note that the first large scale deployment of native IPv6 (i.e. with LIR provided prefixes), was done with 6rd. Customers, of which I am, initially had only /64s. This was because their ISP started with a /32 (the only one it could get quickly, i.e. without arguing about its multi-million customer base), but this was in practice enough for IPv6 to work in typical residential and soho sites. When Free.fr obtained a /26, our IPv6 prefixes became /60s, i.e. enough for all typical sites that aren't very large private networks (tools.ietf.org/html/rfc5569). In my understanding,, suggesting that people should have fear, uncertainty, and doubt, about 6rd, is therefore acting against early IPv6-service deployment and use. IMHO, it's better to encourage them. As I personally don't follow ARIN's work, pleas feel free to forward this to your colleagues there. Regards, RD _______________________________________________ Ietf mailing list Ietf@xxxxxxxx https://www.ietf.org/mailman/listinfo/ietf