Hello,
Did you manage to make it work with a static addressing network ?
I tried this (where myip and mygateway are replaced by real values)

network:
  version: 1
  config:
    - type: physical
      name: eth0
      subnets:
        - type: static
          address: myip/24
          gateway: mygateway

with no success.
and as I don't have an IP assignated and theses cloud images are passwordless by default I can't event log in from the console to troubleshoot.