Ubuntu: статический адрес

ls -la /etc/netplan
---
50-cloud-init.yaml

sudo nano /etc/netplan/50-cloud-init.yaml

# default:
#network:
#    ethernets:
#        eth0:
#            dhcp4: true
#    version: 2

# static ip:
network:
 ethernets:
  eth0:
    dhcp4: false
    dhcp6: false
    addresses:
      - 192.168.168.250/24
    routes:
      - to: default
        via: 192.168.168.1
    nameservers:
      addresses: [192.168.168.1,8.8.4.4,8.8.8.8]
    optional: true
 version: 2
 renderer: networkd

sudo netplan --debug generate
sudo netplan --debug apply