'Ensure the information from the TP-Link router is up to date.
Return boolean if scanning successful.'

def _update_info(self):

    _LOGGER.info('Loading    wireless    clients...')
    url = 'http://{}/userRpm/WlanStationRpm.htm'.format(self.host)
    referer = 'http://{}'.format(self.host)
    page = requests.get(url, auth=(self.username, self.password), headers={'referer': referer}, timeout=4)
    result = self.parse_macs.findall(page.text)
    if result:
        self.last_results = [mac.replace('-', ':') for mac in result]
        return True
    return False
