On 25/01/16 19:43 -0800, Andrew Lutomirski wrote: > I think that the "gateway" override should not be conflated with > always letting the gethostname(2) return value resolve. > > I also think that the whole gethostname(2) mechanism is terminally > screwed up. We abuse the hostname for multiple purposes: > > 1. It shows up in the default bash prompt. > 2. It gets sent to remote DHCP servers. I think this is a mistake on > desktop machines. > 3. Some programs seem to thing that gethostbyname(gethostname()) > should return some reasonable concept of "my ip address" despite the > general nonexistence of such a concept. > > I'll propose a strawman: > > - gethostname(2) always returns "localhost". > > - "localhost" always resolves to 127.0.0.1 or ::1 attempt on settle this one down: http://tools.ietf.org/html/rfc6761 (also filed https://bugzilla.redhat.com/show_bug.cgi?id=975856) > - bash learns to use some intelligent value derived from whatever > hostnamectl would return > > - the default DHCP clients send a client identifier that's a function > only of the MAC address used to send the query > > - Whatever systemd magic special-cases "localhost" as "trust what > DHCP says" goes away. > > and that's it. -- Jan (Poki)
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