Single/Dual NIC DHCP setup

Single NIC DHCP setup with Netplan

network:
  version: 2
  renderer: networkd
  ethernets:
    enp4s0:
      dhcp4: yes

Dual NIC DHCP setup with Netplan

network:
  version: 2
  renderer: networkd
  ethernets:
    enp4s0:
      dhcp4: yes
      dhcp4-overrides:
        route-metric: 100
    enp5s0:
      dhcp4: yes
      dhcp4-overrides:
        route-metric: 200