Description of problem:

During prepare step, FFU fails with the following.

overcloud.Networks.Test_ANetwork:
resource_type: OS::TripleO::Network::Test_A
physical_resource_id: 94e93bfc-a068-4866-9ff3-8c14fd8081af
status: UPDATE_FAILED
status_reason: |
resources.Test_ANetwork: Property error: resources.Test_ANetwork.properties.dns_domain: Error validating value 'Test_a.domain.': 'Test_a.domain.' not in valid format. Reason: Name 'Test_a' must be 1-63 characters long, each of which can only be alphanumeric or a hyphen.

Looking at the THT templates, this dns_domain is created from CloudDomain + network.name.lower; however just changing name_lower (along with neutron network and subnet names) does not work as name_lower also sets network property: "provider:physical_network" which cannot be changed and produces new failure.

resources:
{{network.name}}Network:
type: OS::Neutron::Net
condition: manage_networks

external_id: {{ network.external_resource_network_id }}

properties:
admin_state_up: {get_param: {{network.name}}NetAdminStateUp}
name: {get_param: {{network.name}}NetName}
dns_domain:
list_join:

• '.'
• - network.name.lower()
• {get_param: CloudDomain}

Looking for a way to fix or work-around this issue and continue the FFU.

Version-Release number of selected component (if applicable):
16.2 current

How reproducible:
100%

Steps to Reproduce:
1. see above description
2.
3.

Additional info:
In private comments