On Fri, Nov 23, 2018 at 10:31:28AM -0200, Luciano Andress Martini wrote: > Then I edited /etc/network/interfaces and restart the system, to see > if the ip was changed. And yes, it worked. So this file is still being > used in some way - humm that seems to be the correct place to > configure my interface isn't?
/etc/network/interfaces is the primary, supported means of configuring network interfaces in Debian. It's the best choice for standard server and workstation setups. Network-Manager may also be installed (it's optional). As you've already seen, it is installed when choosing a "desktop environment" during the Debian installation, and skipped if no DE is chosen. N-M is apparently the tool of choice for configuring wireless interfaces on laptops. Interfaces that are configured in /e/n/i are skipped by N-M. Thus, you could think of it as "/e/n/i has priority, and N-M gets whatever /e/n/i didn't get". Then there's some bizarre systemd network interface thing. It's not used by default in Debian. I can't imagine anyone ever using it. You can simply ignore it.
