/etc/netplan# vi 00-installer-config.yaml

# This is the network config written by ‘subiquity‘
network:
  ethernets:
    enp0s3:
      dhcp4: false
      addresses: [192.168.137.122/24]
      optional: true
      gateway4: 192.168.137.1
      nameservers:
        addresses: [114.114.114.114]
  version: 2

sudo netplan apply

route -n