[root@oel72 ~]# cd /etc/sysconfig/network-scripts
[root@oel72 network-scripts]# cat ifcfg-enp0s3
TYPE=Ethernet
BOOTPROTO=static
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_FAILURE_FATAL=no
NAME=enp0s3
UUID=58524328-dc73-4b1f-9a56-e3a5d5a4edd5
DEVICE=enp0s3
ONBOOT=yes
IPV6_ADDR_GEN_MODE=stable-privacy
DNS1=IPADDRESSOFNEWDNSSERVER
DOMAIN="my domains edited for post"
IPADDR=10.0.2.6
PREFIX=24
GATEWAY=10.0.2.2
IPV6_PRIVACY=no
PROXY_METHOD=none
BROWSER_ONLY=no

[root@oel72 ~]# cat /etc/resolv.conf
# Generated by NetworkManager

search my domains edited for post
nameserver IPADDRESSOFOLDDNS1
nameserver IPADDRESSOFOLDDNS2
nameserver IPADDRESSOFOLDDNS3