Re: Why ULA: low collision chance (Was: IPv6 fc00::/7 — Unique local addresses)

[owen at delong.com (Owen DeLong)]

On Oct 21, 2010, at 6:02 AM, William Herrin wrote:

> On Thu, Oct 21, 2010 at 8:14 AM, Ray Soucy <rps at maine.edu> wrote:
>> That's assuming ULA would be the primary addressing scheme used.  If
>> that became the norm, I agree, the extra uniqueness would be
>> desirable, perhaps to the point that you should be asking an authority
>> for FC00::/8 space to be assigned.  But then why wouldn't you just ask
>> for a GUA at that point.
> 
> Because you might want space that doesn't route on the Internet so
> that if your routes accidentally leak external folks still can't reach
> you?
> 
That is, at best, a false sense of security which is worse than no security.

Owen