code: def nic_name_to_host(nic_name):
  	
  	from netifaces import ifaddresses, AF_INET
  	host = ifaddresses(nic_name).setdefault(AF_INET, [{'addr': 'No IP addr'}] )[0]['addr']
  	return(host)
docs: helper function to translate the name of a network card into a valid host name