DNS issue should be solved please update to the latest firmware. But we have recently encouter some bottom layer of TLS issue regards to realteks SDK(which they are fixing now). Please test your environment and feedback so we can also work on it 
DNS issue should be solved please update to the latest firmware. But we have recently encouter some bottom layer of TLS issue regards to realteks SDK(which they are fixing now). Please test your environment and feedback so we can also work on it