, rebooting was the only way to get it to update , , # interfaces(5) file used by ifup(8) and ifdown(8) , #auto lo , #iface lo inet loopback , auto enp2s0 , iface enp2s0 inet static , address 192.168.1.100 , netmask 255.255.255.0 , gateway 192.168.1.1 , dns-nameservers 8.8.8.8 8.8.4.4 ,