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This Wikipedia section seems relevant: http://en.wikipedia.org/wiki/IPv6_address#General_allocation http://en.wikipedia.org/wiki/IPv6_address#General_allocation

by unwind 16y ago

This Wikipedia section seems relevant: http://en.wikipedia.org/wiki/IPv6_address#General_allocation http://en.wikipedia.org/wiki/IPv6_address#General_allocation. A choice quote: IPv6 addresses are assigned to organizations in much larger blocks as compared to IPv4 address assignments: the recommended allocation is a /48 block which contains a number of addresses that is 248 or 7.9×1027 times larger than the entire IPv4 address space.

acqq 16y ago
How much the /48 is larger is again what I don't care as I can calculate that easily but it doesn't mean anything in how it's to be used. The relevant piece is: "5 RIRs, /23 to /12, smallest gets 512 /32 blocks, one per ISP, ISP divides into 64K /48 blocks, typically one for each customer" It's obvious that the "customer" here is not "every man on Earth" or "every phone" but probably should be something like the smaller ISP or the big company. The lower 64 bits are it seems effectively "unique device id." So the idea is to use upper 64 bits to fix the location of the device and lower 64 to address the device. And yes, I think I've understood that the "device id" (lower 64-bits) doesn't have to be fixed and encoded in hardware.
- dugmartin 16y ago
  You can get a free tunneled /48 right now from Hurricane Electric. http://tunnelbroker.net/ http://tunnelbroker.net/
- acqq 16y ago
  The smallest RIP is probably Africa, and if it has /23 and if magamiako is right: http://news.ycombinator.com/item?id=1743268 http://news.ycombinator.com/item?id=1743268 and every /48 goes to every home user, that means that you can't ever have more than 33 million home users in Africa! (512 * 64 * 1024) The 33 million limit is why for me seemed "obvious" that /48 doesn't go to "every man on Earth." Does anybody know something more exact than what's written in Wikipedia article? Some real example how the space is going to be distributed? That was why I started this thread, and sadly still most of the answers are hand-waving "it's big, don't care," even if that doesn't carry any real information.

by unwind 16y ago

acqq 16y ago

How much the /48 is larger is again what I don't care as I can calculate that easily but it doesn't mean anything in how it's to be used. The relevant piece is: "5 RIRs, /23 to /12, smallest gets 512 /32 blocks, one per ISP, ISP divides into 64K /48 blocks, typically one for each customer" It's obvious that the "customer" here is not "every man on Earth" or "every phone" but probably should be something like the smaller ISP or the big company. The lower 64 bits are it seems effectively "unique device id." So the idea is to use upper 64 bits to fix the location of the device and lower 64 to address the device. And yes, I think I've understood that the "device id" (lower 64-bits) doesn't have to be fixed and encoded in hardware.

dugmartin 16y ago
You can get a free tunneled /48 right now from Hurricane Electric. http://tunnelbroker.net/ http://tunnelbroker.net/
acqq 16y ago
The smallest RIP is probably Africa, and if it has /23 and if magamiako is right: http://news.ycombinator.com/item?id=1743268 http://news.ycombinator.com/item?id=1743268 and every /48 goes to every home user, that means that you can't ever have more than 33 million home users in Africa! (512 * 64 * 1024) The 33 million limit is why for me seemed "obvious" that /48 doesn't go to "every man on Earth." Does anybody know something more exact than what's written in Wikipedia article? Some real example how the space is going to be distributed? That was why I started this thread, and sadly still most of the answers are hand-waving "it's big, don't care," even if that doesn't carry any real information.