Comment 2 for bug 1993137

It doesn't seem to be FAN networking only as the following config breaks things in the same way as the original preseed:

config:
  cluster.https_address: 172.31.13.156:8443
  core.https_address: 172.31.13.156:8443
cluster:
  enabled: true
  server_name: lxd0
networks:
- name: lxdbr0
  type: bridge
  config:
    ipv4.nat: true
    ipv4.dhcp.expiry: infinite
    ipv4.address: 240.0.0.1/16
    ipv6.address: none
profiles:
- name: default
  devices:
    root:
      path: /
      pool: data
      type: disk
    eth0:
      type: nic
      nictype: bridged
      parent: lxdbr0
storage_pools:
- name: data
  driver: zfs
  config:
    source: /dev/nvme1n1

Error in "juju status" remains "composing user data: invalid machine configuration: missing API hosts" after deploy the Ubuntu charm.