* Petr Pisar > How does fd00::/16 differes from 10.0.0.0/8? Why getting site scope > address in IPv4 is Ok, while getting such address in IPv6 is considered > as failure? Just a little comment regarding the terminology used here. The terms "global", "site", and "link" scope have very specific and defined meanings in IPv6. If you run "/sbin/ip -6 address list" you will see that all the addresses returned include their scope. You can also select addresses by their scope (e.g. do stuff like "/sbin/ip -6 address flush scope global"). ULAs, fd00::/7, explicitly have a global scope. This is because their reachability is not restricted to a single organisation or site - one of the main features of ULAs compared to site-scoped addresses are that even though they won't be seen on the public internet, two separate organisations can very well connect using VPNs or private interconnects and use their own separate ULA prefixes to communicate. In other words, the scope of ULA addresses are defined by the routing and network topology around them, not by the actual addresses themselves. Look at RFC 4193 for more details (in particular section 3.3). This means that if NM's connectivity check were to report that it had "site" connectivity when only having ULA addresses configured, it would actually be incorrect as far as IPv6 terminology goes. It would be more correct to say "not internet" or something along those lines. Best regards, -- Tore Anderson -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/devel
