The primary network interface

allow-hotplug ens18
#iface ens18 inet dhcp
iface ens18 inet static
address 10.34.0.202
network 10.34.0.0
netmask 255.255.255.0
broadcast 10.34.0.255
gateway 10.34.0.5
dns-nameservers 10.34.0.5