nmcli 修改网卡静态IP和DHCP

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新版的欧拉系统，

修改 etc/sysconfig/network-scripts/ifcfg-enpXXX 后，执行网络服务重启，没有任何反应！！！
systemctl restart network-online.target
systemctl restart NetworkManager

RHCE 考试中 已经将 网卡参数配置 改为 nmcli方式了

改为 静态IP

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nmcli connection modify enp4s0f2 ipv4.method manual ipv4.addresses 172.20.6.110/24 ipv4.gateway 172.20.6.254 ipv4.dns "114.114.114.114,202.96.209.5,202.96.209.5"
nmcli connection modify enp4s0f2 ipv6.method disabled
nmcli connection up enp4s0f2

改为 DHCP

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nmcli connection modify enp4s0f2 ipv4.method auto ipv4.addresses "" ipv4.gateway "" ipv4.dns ""
nmcli connection modify enp4s0f2 ipv6.method disabled
nmcli connection up enp4s0f2