출처 : http://pathcre8or.tistory.com/13 1. checking device status and cleaning target d (디바이스 확인 및 대상 디바이스 정보 삭제) [root@centos7Test ~]# nmcli dev DEVICE TYPE STATE CONNECTION ens160 ethernet connected ens160 ens224 ethernet connected Wired connection 1 ens192 ethernet disconnected — lo loopback unmanaged —[root@centos7Test ~]# nmcli con NAME UUID TYPE DEVICE Wired connection 1 cf0ce2df-1055–4083-b..