1、查看Centos7系统默认的网卡配置（eno16777736）
[root@server ~]# ifconfig eno16777736: flags=4163 mtu 1500 #系统默认的网卡名称 inet 172.16.0.2 netmask 255.255.0.0 broadcast 172.16.255.255 inet6 fe80::20c:29ff:fefa:dbfa prefixlen 64 scopeid 0x20 ether 00:0c:29:fa:db:fa txqueuelen 1000 (Ethernet) RX packets 6699 bytes 8261881 (7.8 MiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 3006 bytes 215704 (210.6 KiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 lo: flags=73 mtu 65536 inet 127.0.0.1 netmask 255.0.0.0 inet6 ::1 prefixlen 128 scopeid 0x10 loop txqueuelen 0 (Local Loopback) RX packets 25200 bytes 1468912 (1.4 MiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 25200 bytes 1468912 (1.4 MiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 [root@server ~]#
