docs: def create_network(userid, os_version, network_info):
      """ Create network device and configure network interface.
  
      Input parameters:
      :userid:            USERID of the guest, last 8 if length > 8
      :os_version:        os version of the image file
      :network_info:      dict of network info
      """
      print("\nConfiguring network interface for %s ..." % userid)
      network_create_info = client.send_request('guest_create_network_interface', 
                                                userid, os_version, network_info)
  
      if network_create_info['overallRC']:
          raise RuntimeError("Failed to create network for guest %s!\n%s" % 
                             (userid, network_create_info))
      else:
          print("Succeeded to create network for guest %s!" % userid)