ubuntu-22.04.3-desktop-amd64/casper/filesystem/usr/share/doc/netplan/examples/bonding.yaml

network:
  version: 2
  renderer: networkd
  bonds:
    bond0:
      dhcp4: yes
      interfaces:
        - enp3s0
        - enp4s0
      parameters:
        mode: active-backup
        primary: enp3s0