$cd /etc/netplan

$sudo nano 00-installer-config.yaml

ganti : 

# This is the network config written by 'subiquity'
network:
  ethernets:
    ens160:
      dhcp4: true
  version: 2

menjadi :

# This is the network config written by 'subiquity'
network:
  ethernets:
    ens160:
        dhcp4: false
        addresses:
         - 10.0.0.9/23
        nameservers:
         addresses: [8.8.8.8, 8.8.4.4]
        routes:
         - to: 0.0.0.0/0
          via: 10.0.0.254
  version: 2

$sudo netplan apply