[154978] in North American Network Operators' Group
Re: using "reserved" IPv6 space
daemon@ATHENA.MIT.EDU (Stephen Sprunk)
Wed Jul 18 09:48:48 2012
Date: Wed, 18 Jul 2012 08:47:57 -0500
From: Stephen Sprunk <stephen@sprunk.org>
To: nanog@nanog.org
In-Reply-To: <20120718132502.GA11293@pob.ytti.fi>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
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On 18-Jul-12 08:25, Saku Ytti wrote:
> On (2012-07-18 09:10 -0400), valdis.kletnieks@vt.edu wrote:
>> You want to roll in at some entropy by adding in the current date or s=
omething, so two "Joes' Burritos and Internet" in 2 different states don'=
t generate the same value. There's a reason that 4193 recommends a 64bit=
timestamp and an EUI64.
> I assume business ids are federal not state, as IRS is federal? Anyhow =
I'm not saying 'this is how it should be done', I'm saying maybe there is=
way to do this in a way which is verifiably random.
US EINs/SSNs, and various state-level ID numbers, are not random; given
our problems with identity theft, they're not guaranteed to be unique,
either. I assume the same is true for identification numbers in most
other countries.
> 64b timestamp and EUI64 make it non-verifiable.
If you publish the numbers you used, then others can verify that those
values are reasonable. I doubt anyone would sift through billions of
reasonable timestamps combined with the thousands of EUI64s at their
site just to find a result that was "memorable".
And, if they did, who cares? It's not like it hurts me for them to do
so--unless I'm dumb enough to do the same thing, happened to get the
same result /and/ happened to merge with them--all of which are still
unlikely events.
S
--=20
Stephen Sprunk "God does not play dice." --Albert Einstein
CCIE #3723 "God is an inveterate gambler, and He throws the
K5SSS dice at every possible opportunity." --Stephen Hawking
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