sudo vi /etc/network/interfaces
source /etc/network/interfaces.d/*
auto lo
iface lo inet loopback
allow-hotplug enp1s0

sudo vi /etc/network/interfaces.d/enp1s0
iface enp1s0 inet static
        address 192.168.1.127
        netmask 255.255.255.0
        gateway 192.168.1.131
        dns-domain intensewebs.com
        dns-nameservers 192.168.1.140 192.168.1.141

sudo vi /etc/resolv.conf
domain yourdomainname.com
search yourdomainname.com
nameserver 9.9.9.9
nameserver 149.112.112.112

sudo vi /etc/hosts
# ADD/CHANGE
192.168.1.103 ctp1.intensewebs.com ctp1

sudo vi /etc/hostname
# ADD/CHANGE
ctp1.intensewebs.com

sudo systemctl restart networking
___________________________________________________________________________
# OPTIONAL NOT NEEDED METHODS
# IF DESIRING TO USE Netork Manager: sudo apt install network-manager
ip link list
ip link show
sudo nmcli device status
sudo nmcli connection modify Example-Connection ipv4.addresses 192.168.1.124/24
sudo nmcli connection modify Example-Connection ipv6.addresses 2001:db8:1::1/64
sudo nmcli connection modify Example-Connection ipv4.method manual
sudo nmcli connection modify Example-Connection ipv6.method manual
sudo nmcli connection modify Example-Connection ipv4.gateway 192.168.1.131
sudo nmcli connection modify Example-Connection ipv6.gateway 2001:db8:1::fffe
sudo nmcli connection modify Example-Connection ipv4.dns "192.168.1.140"
sudo nmcli connection modify Example-Connection ipv6.dns "2001:db8:1::ffbb"
sudo nmcli connection modify Example-Connection ipv4.dns-search example.com
sudo nmcli connection modify Example-Connection ipv6.dns-search example.com
sudo nmcli connection up Example-Connection
sudo nmcli device status

# MANUAL IPV6
nmcli con mod enp1s0 ipv6.addresses "2a22:1d0:5222:4::22f2/64" gw6 "2a22:1d0:5222:4::22f0/64"
nmcli con mod enp1s0 ipv6.method manual