Yes I can appreciate that, we have done the same thing im '500'...


As an educational setup we are looking to federate worldwide, that means 
Shibboleth or similar....a unique UID per academic world wide 
 might be worthwhile....there wont be 2billion academics...students...well i 
guess that would one day be a "ipv4" problem.

Steven Jones

Technical Specialist - Linux RHCE

Victoria University, Wellington, NZ

0064 4 463 6272

From: Rob Crittenden []
Sent: Friday, 28 October 2011 9:34 a.m.
To: Steven Jones
Cc: Adam Young;
Subject: Re: [Freeipa-users] Unique world wide UIDS

Steven Jones wrote:
> Hi,
> Well if you understand Peak Oil and that the "green revolution" was actually 
> truning fossil fuel into food ie we eat oil....only having 2billion UIDs wont 
> be a problem.
> :/

Many, many organizations start with the same uid base, 500 or 1000. When
company A buys company B there are tons and tons of uid collisions. If
each started at a random start point then the chances of collision,
while not zero, are much lower.

Our goal wasn't to guarantee uniqueness in the universe, just to make
integration hopefully easier in the future when namespaces are merged.


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