问题：使用systemctl restart network 或 service network restart 命令重启网卡失败，如下所示。

[root@localhost ~]# systemctl restart network 
Failed to restart network.service: Unit network.service not found.
[root@localhost ~]# 
[root@localhost ~]# 
[root@localhost ~]# service network restart
Redirecting to /bin/systemctl restart network.service
Failed to restart network.service: Unit network.service not found.

解决：

1、可以尝试使用以下命令：

service network-manager restart

2、如果是 Kali Linux（Debian），则需要用以下命令：

service networking restart

3、如果是Centos 8，则需要用以下命令：

nmcli c reload