fix condition on ndfc_underlay_ip_address.j2

[ccoueffe]

Related Issue(s)

Fix issue when ipv4 is not defined. Which could be the case with fabric Peering + unnumbered.

TASK [cisco.nac_dc_vxlan.common : Build underlay IP address allocation From Template] ********************************************************************************************************************************
Friday 08 August 2025  17:24:36 +0200 (0:00:00.014)       0:00:30.534 ********* 
Friday 08 August 2025  17:24:36 +0200 (0:00:00.014)       0:00:30.534 ********* 
An exception occurred during task execution. To see the full traceback, use -vvv. The error was: ansible.errors.AnsibleUndefinedVariable: 'dict object' has no attribute 'ipv4'
fatal: [nac-ndfc3 -> localhost]: FAILED! => {"changed": false, "msg": "AnsibleUndefinedVariable: 'dict object' has no attribute 'ipv4'"}

PLAY RECAP ***********************************************************************************************************************************************************************************************************
nac-ndfc3                  : ok=210  changed=28   unreachable=0    failed=1    skipped=65   rescued=0    ignored=0   

Related Collection Role

• cisco.nac_dc_vxlan.validate
• cisco.nac_dc_vxlan.dtc.create
• cisco.nac_dc_vxlan.dtc.deploy
• cisco.nac_dc_vxlan.dtc.remove
• other

Related Data Model Element

• vxlan.fabric
• vxlan.global
• vxlan.topology
• vxlan.underlay
• vxlan.overlay
• vxlan.overlay_extensions
• vxlan.policy
• vxlan.multisite
• defaults.vxlan
• other

Proposed Changes

Test Notes

Cisco NDFC Version

Checklist

• Latest commit is rebased from develop with merge conflicts resolved
• New or updates to documentation has been made accordingly
• Assigned the proper reviewers