arch linux networking netctl
http://blog.programmableproduction.com/2016/02/15/ArchLinux-Setting-Network-With-Netctl/
cp /etc/netctl/example/ethernet-dhcp /etc/netctl/enp3s0-ethernet-dhcp
chmod 600 enp3s0-ethernet-dhcp
sudo netctl start enp3s0-ethernet-dhcp
sudo netctl enable enp3s0-ethernet-dhcp
ip addr