flux-infra/infra/node-feature-discovery/node-feature-discovery-rules/network-adapter.yaml

apiVersion: nfd.k8s-sigs.io/v1alpha1
kind: NodeFeatureRule
metadata:
  name: network-adapter
spec:
  rules:
    - name: "Network interface label"
      labelsTemplate: |
        {{ range .network.device }}network-adapter={{ .name }}
        {{ end }}        
      matchFeatures:
        - feature: network.device
          matchExpressions:
            "name":
              op: InRegexp
              value: ["enp.s0"]