With the following tosca VduCp definitions, policy distribution will complain about can NOT find VDU with name 'VL_mux_gw_private_net', which is wrong. Policy distribution should find VDU by following the requirement of 'virtual_binding' instead of 'virtual_link'.

Cp_vgw_mux_gw_private_net:
  type: tosca.nodes.nfv.VduCp

  ... ... 
  properties:

    ... ...
    virtual_network_interface_requirements:
    - name: "pci-passthrough"
      support_mandatory: true
      network_interface_requirements:
         interfaceType: '{"schemaVersion": "0", "schemaSelector": "", "hardwarePlatform":"generic", "mandatory": "true", "configurationValue": "PCI-Passthrough"}'
      nic_io_requirements:
        logical_node_requirements:
           pciVendorId: '{"schemaVersion": "0", "schemaSelector": "", "hardwarePlatform": "generic", "mandatory": "true", "configurationValue": "1234"}'
  requirements:
  - virtual_link:
    capability: virtual_linkable
    node: VL_mux_gw_private_net
  - virtual_binding:
     capability: virtual_binding
     node: VDU_vgw_0