3. net-tools 설치가 완료되면 ifconfig 명령어가 제대로 실행되는지 확인합니다.

[root@centos ~]# ifconfig
enp0s3: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        ether 08:00:27:31:fb:8d  txqueuelen 1000  (Ethernet)
        RX packets 28  bytes 276 (276.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

enp0s8: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 ether 08:00:27:a1:ec:77 txqueuelen 1000 (Ethernet) RX packets 3 bytes 276 (276.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 0 bytes 0 (0.0 B) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

enp0s9: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 10.0.4.15 netmask 255.255.255.0 broadcast 10.0.4.255 inet6 fe80::a00:27ff:fe46:b021 prefixlen 64 scopeid 0x20<link> ether 08:00:27:46:b0:21 txqueuelen 1000 (Ethernet) RX packets 5657 bytes 510529 (498.5 KiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 333 bytes 36530 (35.6 KiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536 inet 127.0.0.1 netmask 255.0.0.0 inet6 ::1 prefixlen 128 scopeid 0x10<host> loop txqueuelen 0 (Local Loopback) RX packets 140 bytes 12304 (12.0 KiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 140 bytes 12304 (12.0 KiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0