2.1——2.3網絡基本配置，ifconfig.IPa show.alias.ethtool.route.nslookup.Nexstar.it down.ifup

centos7網卡命名規則 https://blog.csdn.net/huaying927/article/details/99636007?utm_source=app 《ifup/ifdown ethX 和 ifconfig ehtX up/down的區別》,https://blog.csdn.net/weixin_41632560/article/details/86553633?utm_

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