Addressing - DNS Reverse DNS mapping Difficult to maintain reverse mapping Cannot auto-generate (like dhcp128.example.com) Dynamic DNS registration still in infancy Scoped addresses - separate name tree, just like firewall? Temporary address - probably we don't want to register Don't rely on the existence of PTR RR Alternate mechanism? - ICMPv6 node info query Forward DNS mapping Dynamic DNS registration still in infancy Scoped addresses separate name tree, just like firewall? AAAA record does not carry scope info