ISP customer assignments

Nathan Ward nanog at
Tue Oct 20 02:12:11 UTC 2009

On 20/10/2009, at 3:10 PM, bmanning at wrote:

> On Tue, Oct 20, 2009 at 03:07:39PM +1300, Nathan Ward wrote:
>> On 20/10/2009, at 3:02 PM, Bill Stewart wrote:
>>> plus want the ability to take their address
>>> space with them when they change ISPs (because there are too many
>>> devices and applications that insist on having hard-coded IP  
>>> addresses
>>> instead of using DNS, and because DNS tends to get cached more often
>>> than you'd sometimes like.
>> That's why we have Unique Local Addresses.
> 	but Nathan,  they are only statistically unique.

Sure, but I don't think that changes my point.

Also if you want to increase your chances of uniqueness (which are  
already pretty good if you're not using subnet 0 or 1 or whatever) you  
can jump on to somewhere on the sixxs site and announce that you're  
using a specific ULA prefix.

Nathan Ward

More information about the NANOG mailing list