New developments for IPv6 New developments are possible only if you deploy IPv6 and use it "Killer app" discussion seems moot Very important to actually use it, rather than just think So deploy it now! - ISPs, hurry up! Apps designs on network without limitation of NAT Peer-to-peer fits well Web camera/chat/VoIP with less scaling limit Directory of service/service discovery? Security model? Firewall model isn't sufficient anyways Beyond the firewall model - "Fire suit"? Security model for public access network (hotspot wireless) Fixing various IPv4-only APIs DBMS, proprietary APIs, libraries Educational materials