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.