With this change:
$ cat /etc/network/interfaces.d/setup
auto lo
iface lo inet loopback
#auto eth0
#iface eth0 inet dhcp
System reboot shows no more issue.
$ systemctl status networking.service
● networking.service - Raise network interfaces
Loaded: loaded (/lib/systemd/system/networking.service; enabled;
vendor preset: enabled)
Active: active (exited) since Tue 2020-08-25 09:06:32 -03; 3h 21min ago
Docs: man:interfaces(5)
Main PID: 541 (code=exited, status=0/SUCCESS)
Tasks: 0 (limit: 3762)
Memory: 0B
CGroup: /system.slice/networking.service
Best regards!
