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Completely agree. Just use systemd-resolved which is the recommended way of doing DNS anyway.

And how do you communicate with systemd-resolved?

Via DBus:

dbus is just a protocol that needs something else to actually transfer the data.

Normally, that's a socket in /run/dbus/system_bus_socket

And guess what. A UNIX socket does not use DNS or the damned getaddrinfo() function that's the ire of the article.