报错如下：
Job for network.service failed because the control process exited with error 美国高防vps code. See “systemctl status network.service” and “journalctl -xe” for details.
报错原因：network与NetworkManager冲突导致
解决办法：
[root@localhost ~]# systemctl stop NetworkManager注：停止NetworkManager后添加网卡时不能发现，关闭后才能发现
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