(DO NOT EDIT resolv.conf)   If needed, the steps to statically configure a DNS server to the Expedition server will be to edit the dns-nameserver in the /etc/network/interfaces file.    Editing resolv.conf is not reliable as any edits will be overwritten on reboot of the Expedition server.   expedition@Expedition:/etc/network$ sudo vi interfaces   Configured to use DHCP   # This file describes the network interfaces available on your system # and how to activate them. For more information, see interfaces(5).   source /etc/network/interfaces.d/*   # The loopback network interface auto lo iface lo inet loopback   # The primary network interface auto ens33 iface ens33 inet dhcp dns-nameservers  8.8.8.8  4.2.2.2   Configured with a static IP   # This file describes the network interfaces available on your system # and how to activate them. For more information, see interfaces(5).   source /etc/network/interfaces.d/*   # The loopback network interface auto lo iface lo inet loopback   # The primary network interface auto ens33 iface ens33 inet static        address 192.168.252.136        netmask 255.255.255.0        gateway 192.168.252.2        dns-nameservers      8.8.8.8 4.2.2.2