Centos7 cannot ping the gateway under the virtual machine

Problem:

After shutting down the Centos7.5 virtual machine, I found that I could not connect to the virtual machine using Xshell after restarting it the next day. After testing, I found that the virtual machine could not ping 192.168. .1.1. Unable to ping 192.168.1.118 (client) and www.baidu.com

Solution:

1. Close the network port ens33, and then reopen it

[root@ctos110 ~]# ifdown ens33  #关闭网络
[root@ctos110 ~]# ifup ens33  #启动网络

2. Reload the network card program

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