Hi. On Wed, Feb 17, 2021 at 01:44:35AM +0100, Dmitry Katsubo wrote: > root@debian:~ # systemctl status networking.service ... > Process: 691 ExecStart=/sbin/ifup -a --read-environment (code=exited, status=1/FAILURE) > Main PID: 691 (code=exited, status=1/FAILURE) ... > Any ideas where can I take a look? Thanks in advance! Try running this: ifdown -a --force ifup -a -v Last command should show you the source of the trouble. Reco