vi /etc/networks
default 0.0.0.0 loopback 127.0.0.0 link-local 169.254.0.0
vi /etc/sysconfig/network-scripts/ifcfg-enp0s8
DEVICE=enp0s8 BOOTPROTO=dhcp ONBOOT=yes NAME=enp0s8 UUID=。。。。。。。