docs: def _get_merged_nics(hypervisor, profile, interfaces=None, dmac=None):
      '''
      Get network devices from the profile and merge uer defined ones with them.
      '''
      nicp = _nic_profile(profile, hypervisor, dmac=dmac) if profile else []
      log.debug('NIC profile is %s', nicp)
      if interfaces:
          users_nics = _complete_nics(interfaces, hypervisor)
          for unic in users_nics:
              found = [nic for nic in nicp if nic['name'] == unic['name']]
              if found:
                  found[0].update(unic)
              else:
                  nicp.append(unic)
          log.debug('Merged NICs: %s', nicp)
      return nicp