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ERROR_CLUSTER_NETINTERFACE_EXISTS
The cluster already has an interface record for this adapter or network identity. This often follows a duplicate deployment action or a change to adapter configuration while the cluster is reconciling its network topology.
List the existing cluster interface and its adapter identity before recreating anything. If provisioning is idempotent, reuse the discovered object; if the adapter changed, allow cluster network discovery to converge on the new topology.
What to check
- Inspect all cluster network interfaces and map them to the physical adapters on each node.
- Check for duplicate MAC addresses, cloned VM settings, duplicate IP addresses, or adapter renames.
- Do not edit cluster network records directly; correct the adapter or network configuration and let the cluster rediscover it.
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