openstack team mailing list archive

[Chris Behrens <chris.behrens@xxxxxxxxxxxxx>]

On Jul 11, 2011, at 12:37 PM, Ed Leafe wrote:

> On Jul 11, 2011, at 3:24 PM, Chris Behrens wrote:
> 
>>> 	It's a shame that the ipv6 proposal was never more fully considered. That would handle the uniqueness, with the added benefit of providing simple zone routing via DNS, with the exact same 128-bit/32 char size.
>> 
>> I don't I remember that proposal, but that's such a neat idea.  Was anything discussed at all in Santa Clara regarding encoding zone information in the instance identifier?  I apparently missed the instance identifier discussion somehow.
> 
> 
> 	At the end of the instance referencing discussion, Van Lindbergh brought up the idea. We discussed it with several people both in the conference room and over lunch. I believe that the main objections were that not everyone would have an IPv6 creation scheme, whereas UUID generators are ubiquitous. The other was a vague concern

Ya, I was guessing that would be a concern.  Doesn't seem like a huge deal, since everyone should be moving towards ipv6 only anyway.  I could see some objections raised if you didn't want any sort of public network interface at all... but you could still assign an unused address.

> about "revealing internal structure", but since the information "revealed" would be the exact same info in the instance's public network info, it didn't strike me as a serious concern.

Right.  As long as there is a public network interface, people are going to be able to figure out at least some part of 'internal structure'.

- Chris

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