Netplan

config

/etc/netplan/01-netcfg.yaml

network:
  ethernets:
    ens18:
      dhcp4: true
  version: 2

sudo netplan apply

sudo netplan --debug apply
  # note "apply --debug" does not work

networkctl

IDX LINK  TYPE     OPERATIONAL SETUP
  1 lo    loopback carrier     unmanaged
  2 ens18 ether    routable    configured

2 links listed.

examples

https://github.com/canonical/netplan/tree/main/examples

static

network:
  version: 2
  renderer: networkd
  ethernets:
    enp3s0:
      addresses:
        - 10.10.10.2/24
      nameservers:
        search: [mydomain, otherdomain]
        addresses: [10.10.10.1, 1.1.1.1]
      routes: 
        - to: default
          via: 10.10.10.1

ref: https://github.com/canonical/netplan/blob/main/examples/static.yaml

dhcp

network:
  version: 2
  renderer: networkd
  ethernets:
    enp3s0:
      dhcp4: true

ref: https://github.com/canonical/netplan/blob/main/examples/dhcp.yaml