I'm not sure I understand what you mean. The AF_INET and AF_INET6 don't represent URLs because they are on completing different layer (layer 4) where the URLs o

I'm not sure I understand what you mean. The AF_INET and AF_INET6 don't represent URLs because they are on completing different layer (layer 4) where the URLs operate on layer 7. On top of that there's an add-on protocol to translate name to IP - DNS. To do what you wanted it would require to redesign the whole networking. Named Data Networking[1] (NDN) which unlike TCP/IP addresses data would be able to support URLs like that natively. [1] https://named-data.net/project/ https://named-data.net/project/