using ULA for 'hidden' v6 devices?

Chuck Anderson cra at WPI.EDU
Fri Jan 27 01:58:42 UTC 2012

On Thu, Jan 26, 2012 at 07:53:18PM +0000, George Bonser wrote:
> > Even if you don't see an advantage to GUA, can you point to a
> > disadvantage?
> Just a matter of convenience.  If you have a lot of management IPs or some other IP addresses that are never going to need internet access (an array of 10,000 sensors or something) you don't need to dip into your global allocation to address them.  If it is routed within the organization but never goes to the Internet, ULA is ok.  If it doesn't get routed at all, link local will do fine.   It's good to keep in mind that more things than computers with web browsers are going to get an IP address.

Link-local won't do fine in many cases due to poor application
compatibilty with address scopes.

More information about the NANOG mailing list