On Oct 18, 2010, at 6:25 PM, David Conrad wrote: > RS, > > On Oct 18, 2010, at 2:16 PM, Robert E. Seastrom wrote: >> If we were to give a /48 to every human on the face of the planet, we >> would use about .000025 of the total available IPv6 address space. > > Sure. I once did the math that suggested that even if you multiplied the > current IPv4 consumption rate by 1000 and applied that consumption rate to > IPv6 /48s, the 1/8th of the IPv6 address space used for global unicast would > last over 100 years. > > The problem is that allocation policy depends on who shows up at RIR > meetings. Marshall has pointed out the (potential) implications of that > policy with respect to 6rd. My math didn't take 6rd into account. > > Simply, there is no finite resource that people can't figure out a way to > waste in an insane fashion. Since IPv6 is a finite resource, I personally > think it makes sense for folks to be reasonably conservative in assignment to > customers. > > Regards, > -drc >
Agreed. /48 is reasonably conservative in native IPv6 deployments. 6rd cannot be done in a reasonably conservative fashion, so, we're kind of stuck with giving /24s to ISPs to give /56s to their customers and living with the consequences. Owen
