Unreachable device log message

[rogerscuall]

During the execution of the playbook vxlan.yaml I'm getting the message:

TASK [cisco.nac_dc_vxlan.create : Add NDFC Fabric Devices nac-fabric1] *************************************************************
[WARNING]: Managing fabric switches can take a while.  Please be patient...
fatal: [nac-fabric1]: FAILED! => {"changed": false, "msg": "Switch with IP 10.4.x.20 is not reachable or is not a valid IP"}

This happens during the execution of the task:

- name: Add NDFC Fabric Devices {{ MD_Extended.vxlan.fabric.name }}
  cisco.dcnm.dcnm_inventory:
    fabric: "{{ MD_Extended.vxlan.fabric.name }}"
    config: "{{ vars_common_local.updated_inv_config['updated_inv_list'] }}"
    deploy: false
    save: false
    state: merged
  vars:
    ansible_command_timeout: 3000
    ansible_connect_timeout: 3000
  when: MD_Extended.vxlan.topology.switches | length > 0

In the role cisco.nac_dc_vxlan.create.
I'm unaware from where the call to the switch is happening but:

• If the call to the switch is sourced from the box where Ansible is running, I can SSH in that switch 10.4.x.20.
• If the call is then performed form the Nexus Dashboard or Fabric Controller the switch is now managed by it and reachability is ok.
  Running in debug mode I get:

fatal: [nac-fabric1]: FAILED! => {
    "changed": false,
    "invocation": {
        "module_args": {
            "config": [
                {
                    "auth_proto": "MD5",
                    "max_hops": 0,
                    "password": "VALUE_SPECIFIED_IN_NO_LOG_PARAMETER",
                    "preserve_config": false,
                    "role": "spine",
                    "seed_ip": "10.4.x.22",
                    "user_name": "VALUE_SPECIFIED_IN_NO_LOG_PARAMETER"
                },
                {
                    "auth_proto": "MD5",
                    "max_hops": 0,
                    "password": "VALUE_SPECIFIED_IN_NO_LOG_PARAMETER",
                    "preserve_config": false,
                    "role": "spine",
                    "seed_ip": "10.4.x.24",
                    "user_name": "VALUE_SPECIFIED_IN_NO_LOG_PARAMETER"
                },
                {
                    "auth_proto": "MD5",
                    "max_hops": 0,
                    "password": "VALUE_SPECIFIED_IN_NO_LOG_PARAMETER",
                    "preserve_config": false,
                    "role": "leaf",
                    "seed_ip": "10.4.x.20",
                    "user_name": "VALUE_SPECIFIED_IN_NO_LOG_PARAMETER"
                },
                {
                    "auth_proto": "MD5",
                    "max_hops": 0,
                    "password": "VALUE_SPECIFIED_IN_NO_LOG_PARAMETER",
                    "preserve_config": false,
                    "role": "leaf",
                    "seed_ip": "10.4.x.21",
                    "user_name": "VALUE_SPECIFIED_IN_NO_LOG_PARAMETER"
                }
            ],
            "deploy": false,
            "fabric": "nac-fabric1",
            "query_poap": false,
            "save": false,
            "state": "merged"
        }
    },
    "msg": "Switch with IP 10.4.x.20 is not reachable or is not a valid IP"
}

[dacasti2mx]

Could you please share the output from:
nac-nd/host_vars/nac-fabric1/topology_switches.nac.yaml and
python ~/script/serials.py
I'm curious about the ip addressing used.