def get_ip_addr(self) -> str:
        '''Show IP Address.'''
        output, _ = self._execute(
            '-s', self.device_sn, 'shell', 'ip', '-f', 'inet', 'addr', 'show', 'wlan0')
        ip_addr = re.findall(
            r"\b(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\b", output)
        if not ip_addr:
            raise ConnectionError(
                'The device is not connected to WLAN or not connected via USB.')
        return ip_addr[0]
Show IP Address.