Comment

Comment by Bruce Sinclair on January 24, 2010 at 4:50pm

Just read this one today at: http://www.zytrax.com/tech/protocols/ipv6.html

Everything about IPv6 is BIG. An IPv4 address is 32 bits, an IPv6 address is 128 bits. This is about the number where each blade of grass could have its own IPv6 address.

Comment by Jan Herrygers on January 20, 2010 at 1:37pm

if all IPv4 address could fit within a Blackberry, it would take a storage device the physical size of the Earth to contain all available IPv6 addresses

source: ICANN press release

Comment by Mohsen Mashayekhi on December 31, 2009 at 10:14am

Sounds good, "only time will tell"

Comment by Jan Herrygers on December 30, 2009 at 8:03pm

I just realise I said: There are enough IPv6 addresses given to a residential internet user to address every book in the world.

(assuming /48 for residential customers)

Comment by Jan Herrygers on December 30, 2009 at 7:56pm

According to my calculator application, there are 2,814749767107e+14 /48 networks available IPv6.
I don't believe the earth will support 1e+14 people in the next century, so I'm certain I will have all the IPv6 address space I need.

I don't think there is such a thing like an absolute future proof (as in forever) solution, so I agree that you cannot number everything with IPv6.

That said, I don't know what we can reasonably give an IPv6 address, and exhaust the address space.

The book, carpet, etc. example:

There have been written one billion book titles: google answers
Since this also includes every edition of the phone book and every paperback novel that flopped, I estimate 100 000 copies have been printed per book. (unfounded guesswork) These can be addressed in a single /48 (given that a special RFC is written for the book network, so no hinder from EUI-64 etc.)

Based on more unfounded guesswork, I estimate there aren't more than 1000 pieces of clothes, furniture, drapes,... per book.
This would mean that everything Mohsen named can be addressed with a /38. Make that a /32 for hierarchical routing purposes.

needed subnets: 2^48 - 2^(48 - 32) = 2,814749766451e+14 ≃ 2^48
number of /48's ^ ^ number of /48's in /32

So there would still be a /48 for every person when Mohsen numbers everything that he named.

About scaling from a person: only persons will be numbering things. One person can only number so many things, even with automation.
Hereby I assume everything that can be numbered is worth addressing...

But for the extreme realist, only time will tell.

Comment by Mohsen Mashayekhi on December 22, 2009 at 5:12am

Ahmed, i know that, but everything has the end.cause of your scale is about the person, it is enough. but change your mind

Comment by Ahmed Abu-Abed on December 22, 2009 at 1:46am

Each person on earth can have a billion public v6 addresses and we will still be far away from v6 address exhaustion.

Comment by Mohsen Mashayekhi on December 20, 2009 at 10:46am

who knows, may be someday we`ll be forced to put IP addresses on our carpets,furnitures,shoes,clothes... even on our books then 2^128 wont enough too.

Comment by Nicolas Filion on December 14, 2009 at 6:23pm

I second Jeremy and the others here.... a lot of the addresses (hosts) won't ever be used. We're talking about networks here. But it's still a lot fleas generations :)

Comment by Jan Zorz on December 4, 2009 at 4:38pm

Hi @all...

I like the "pixel" explanation best :)

From http://pthree.org/2009/03/08/the-sheer-size-of-ipv6/ :

Let’s allocate the entire IPv4 space to a singe pixel on my screen. That means that I would need an image size of 4,294,967,296 pixels square. An image of this size would require a monitor width of only 645 miles. Putting the center of the monitor in the center of the United States, and I can see that my monitor is large enough to cover 6 states in the Midwest- Nebraska, Iowa, Missouri, Kansas, Oklahoma and Arkansas. Again, remember that each pixel in my monitor would be occupying 4.2 billion IP addresses. Think any hardware manufacturer is willing to make a monitor this large for me?

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