...
[root@rdlab network-scripts]# cat ifcfg-eno1
TYPE=Ethernet
PROXY_METHOD=none
BROWSER_ONLY=no
BOOTPROTO=dhcp
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_FAILURE_FATAL=no
IPV6_ADDR_GEN_MODE=stable-privacy
NAME=eno1
UUID=7482c4f0-da35-4693-b6bc-e1dadb9f3f6f
DEVICE=eno1
ONBOOT=yes
IPV6_PRIVACY=no
...
Example when Ethernet is not available through GUI
During CentOS installation if the Ethernet was not enabled or set to turn on automatically that port will not appear in the GUI for setting changes.
...
Command line inquiry does show “enp0s3” available, but not active.
...