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vi /etc/network/interfaces

auto eno1
iface eno1 inet static
address 192.168.230.31
netmask 255.255.255.0
network 192.168.230.0
gateway 192.168.230.1
dns-nameservers 192.168.230.1 8.8.8.8

sudo -i
ifdown eno1; ifup eno1