我的网络服务没有在 lubuntu 中失败

我一直在尝试启动网络服务，但它不起作用。我收到以下错误。我尝试了很多方法，但都没有奏效。

root@cerberos:~# service networking restart
Job for networking.service failed because the control process exited with error code. See "systemctl status networking.service" and "journalctl -xe" for details.

输入 systemctl 命令后，我得到了这个：

● networking.service - Raise network interfaces
   Loaded: loaded (/lib/systemd/system/networking.service; enabled; vendor preset: enabled)
  Drop-In: /run/systemd/generator/networking.service.d
           └─50-insserv.conf-$network.conf
   Active: failed (Result: exit-code) since Thu 2019-04-04 14:47:36 UTC; 5min ago
     Docs: man:interfaces(5)
  Process: 749 ExecStart=/sbin/ifup -a --read-environment (code=exited, status=1/FAILURE)
  Process: 746 ExecStartPre=/bin/sh -c [ "$CONFIGURE_INTERFACES" != "no" ] && [ -n "$(ifquery --read-environment --list --exclude=lo)" ] && udevadm settle (code=exited
 Main PID: 749 (code=exited, status=1/FAILURE)

Apr 04 14:47:36 cerberos systemd[1]: Starting Raise network interfaces...
Apr 04 14:47:36 cerberos ifup[749]: Cannot find device "eth0"
Apr 04 14:47:36 cerberos ifup[749]: Failed to bring up eth0.
Apr 04 14:47:36 cerberos systemd[1]: networking.service: Main process exited, code=exited, status=1/FAILURE
Apr 04 14:47:36 cerberos systemd[1]: Failed to start Raise network interfaces.
Apr 04 14:47:36 cerberos systemd[1]: networking.service: Unit entered failed state.
Apr 04 14:47:36 cerberos systemd[1]: networking.service: Failed with result 'exit-code'.
lines 1-17/17 (END)

下面的 /etc/network/interfaces 配置文件给了我这个。

# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

# Source interfaces
# Please check /etc/network/interfaces.d before changing this file
# as interfaces may have been defined in /etc/network/interfaces.d
# See LP: #1262951
source /etc/network/interfaces.d/*.cfg

and the content of /etc/network/interfaces.d/ shows 

uto eth0
iface eth0 inet static
address 10.4.0.2
netmask 255.255.255.0
gateway 10.4.0.1
dns-nameservers 10.4.1.12

实际上我无法理解为什么 ifup 无法找到 eth0 设备以及如何使其工作？