In the UDN docs - [0] - API reference, the `infrastructureSubnets` attribute does not indicate the .2 address is taken by default (for the UDN management port).


[0] - https://docs.redhat.com/en/documentation/openshift_container_platform/4.20/html/multiple_networks/primary-networks

Always

    1. Provision a UDN with the following spec: 
spec:
  layer2:
    ipam:
      lifecycle: Persistent
    role: Primary
    subnets:
    - 172.16.145.0/24
  topology: Layer2
    2. Import a VM whose VMI has the following annotation: 
  template:
    metadata:
      annotations:
        network.kubevirt.io/addresses: '{"udn-primary": ["172.16.145.2"]}'   
    

    If a user tries to import an existing VM with that address - i.e. the second address in the subnet - the importing operation will fail with a confusing error message: 

"""
failed to ensure requested or annotated IPs [172.16.170.2/24] for test-user-defined-network-ns/layer2-udn/test-user-defined-network-ns/virt-launcher-vm-under-test-bc9d275c89544fc8-57k8q: provided IP is already allocated
"""

    The documentation should clearly indicate that IP address is taken by default by the UDN infrastructure.