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Re: Still unable to restart networking on Debian 9 text mode only

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.