Hi Mike, > IPv6 routing protocols seem in some cases to exclusively use automatic link > local addresses. Even for manual configuration, link locals deal with the ND > exhaustion attack problem in the core quite nicely, while also simplifying > address management. > > Are there practical reasons for global addresses on router interfaces?
Pinging interface endpoints for debugging and monitoring, being able to see which interface is used in a traceroute, stuff like that. Routing protocols can work perfectly fine without global addresses, but netadmins have a harder time with just link locals :-) But true: it is something that I have tested in the lab, and it does reduce the attack surface of the network a bit. Cheers, Sander
