The Department of Work and Pensions, UK has an entire /8

Wed Sep 19 05:06:49 UTC 2012

On Sep 18, 2012, at 9:49 PM, Mike Hale wrote:
> So...why do you need publicly routable IP addresses if they aren't
> publicly routable?

Because you have private connectivity with other companies and you need guaranteed unique IP space.  No, really, you can't implement NAT for every possible scenario and even if you could you'd need publicy routable space to NAT it to, or you run into the same collisions.

I have worked at companies that have in excess of 4k private interconnections with their clients. Unique IP space is the only way to make this work.

-- 
Jo Rhett
Net Consonance : net philanthropy to improve open source and internet projects.