# ip -4 addr //查看IP地址
# brctl show //查看网桥
# ifconfig virbr0 down
# brctl delbr virbr0 //删除网桥
# systemctl disable libvirtd.service //禁用libvirtd服务开机自启动
# ip -4 add
# ip -4 addr //查看IP地址
# brctl show //查看网桥
# ifconfig virbr0 down
# brctl delbr virbr0 //删除网桥
# systemctl disable libvirtd.service //禁用libvirtd服务开机自启动
# ip -4 add