diskimage-builder/diskimage_builder/elements/simple-init/package-installs.yaml

dhcp-client:
net-tools:
ifupdown:
network-scripts:
  when: DIB_SIMPLE_INIT_NETWORKMANAGER = 0
NetworkManager:
  when: DIB_SIMPLE_INIT_NETWORKMANAGER != 0
NetworkManager-initscripts-ifcfg-rh:
  when: DIB_SIMPLE_INIT_NETWORKMANAGER != 0