1. 停止并重启网络服务
systemctl stop NetworkManager
systemctl disable NetworkManager
systemctl restart network
2. 重新获取IP
dhclient -r # 释放旧IP
dhclient # 获取新IP
3. 查看IP
ip addr show
systemctl stop NetworkManager
systemctl disable NetworkManager
systemctl restart network
dhclient -r # 释放旧IP
dhclient # 获取新IP
ip addr show