On Wed, Oct 29, 2025 at 12:05:24 +0100, [email protected] wrote: > I don't know what a new Debian installation would chose as default > networking suite
As far as I'm aware, it's still the same as it has been for many, many years: ifupdown is always installed, and Network Manager is installed if a Desktop Environment is selected. Loopback is always configured in ifupdown (/etc/network/interfaces). The other interfaces detected by the installer are configured in NM if that's installed, otherwise in /e/n/i. Any interfaces configured in /e/n/i are ignored by NM, so if one were to install NM after the initial installation was already finished, then one would need to remove the interfaces from /e/n/i in order to let NM manage them, should that be desired. Use of systemd-networkd is never automatic, but it's available and supported for those who wish to use it. More exotic choices (connman?) are also available, but one may find very few users able to assist with problems.
