查找LinuxIP錯誤
[root@localhost ~]# ifconfig
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> ?mtu 1500
? ? ? ? ether 00:0c:29:14:f7:3b ?txqueuelen 1000 ?(Ethernet)
? ? ? ? RX packets 0 ?bytes 0 (0.0 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
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 1 ?(Local Loopback)
? ? ? ? RX packets 192 ?bytes 16704 (16.3 KiB)
? ? ? ? RX errors 0 ?dropped 0 ?overruns 0 ?frame 0
? ? ? ? TX packets 192 ?bytes 16704 (16.3 KiB)
? ? ? ? TX errors 0 ?dropped 0 overruns 0 ?carrier 0 ?collisions 0
virbr0: flags=4099<UP,BROADCAST,MULTICAST> ?mtu 1500
? ? ? ? inet 192.168.122.1 ?netmask 255.255.255.0 ?broadcast 192.168.122.255
? ? ? ? ether 52:54:00:61:6f:a5 ?txqueuelen 1000 ?(Ethernet)
? ? ? ? RX packets 0 ?bytes 0 (0.0 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
2017-12-27
vi /etc/sysconfig/network-scripts/ifcfg-ens33
查看BOOTPROTO的值是否=dhcp，如果不是，改成=dhcp（自動獲取網絡），
查看ONBOOT的值是否=yes，如果不是，改成=yes（隨網絡服務啟動）。
僅供參考。