Настройка сети в ОС CentOS7

DEVICE="eth0"
BOOTPROTO="none"
ONBOOT="yes"
IPADDR="192.168.1.100"
NETMASK="255.255.255.0"
GATEWAY="192.168.1.1"

DEVICE="eth0"
BOOTPROTO="dhcp"
ONBOOT="yes"

DEVICE=eth0
TYPE=Ethernet
UUID=db5f606e-4861-48ff-8613-0135e3b8ba12
ONBOOT=yes
NM_CONTROLLED=yes
BOOTPROTO=none
HWADDR=00:1C:59:a4:cc:3d
IPADDR=91.12.117.14
PREFIX=28
GATEWAY=91.12.117.1
DNS1=77.88.8.8
DNS2=77.77.8.1
DEFROUTE=yes
IPV4_FAILURE_FATAL=yes
IPV6INIT=no
NAME="System eth0"