sudo vi /etc/network/interfaces
# 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 ens160
iface ens160 inet static
address 192.168.99.10
netmask 255.255.255.0
network 192.168.99.0
broadcast 192.168.99.255
gateway 192.168.99.1
# dns-* options are implemented by the resolvconf package, if installed
dns-nameservers 8.8.8.8 8.8.4.4
up route add -net 10.31.1.0/24 gw 192.168.99.1 dev ens160