IP : 172.16.30.100/24
网关：172.16.30.1
DNS：172.16.30.243
#nmcli connection show 查看当前已有的连接名
# nmcli connection modify eno16777736 ipv4.addresses 172.16.30.100/24 ipv4.gateway 172.16.30.1 ipv4.dns 172.16.30.243 connection.autoconnect yes ipv4.method manual
# nmcli connection up eno16777736 ####重新载入该连接的配置
