Wi-Fi interruption issue faced by Chromecast users
The problem seems to have emerged through the bulk delivery of MDNS packets.
A few users of Google Chromecast have reported about facing random crashes on their Wi-Fi networks. The Router vendors now seem to have recognised the crashing issue and started pushing patches from their end to ensure their customers a stable experience.
Google has also admitted that the Home Max is facing an issue when it is connected to the WiFi network. This issue is faced by many Google Home Max users. According to the complaints on the Google Product Forum, the Home Max is ‘killing the WiFi network' for many users. To bring the network back, the router needs to undergo a hard restart from the user.
The TP-Link engineers seem to have commented on the same and said that the issue exists due to multicast DNS (MDNS) packets that are broadcasted through Google Chromecast and Home in a huge amount and at a very high speed in a short amount of time. They said, "This occurs when the device is awakened from the ‘sleep mode’ and could exceed more than 100,000 packets in a short amount of time. The longer your device is in 'sleep', the larger this packet burst will be. This issue may eventually cause some of the router's primary features to shut down - including wireless connectivity."
Linksys and Netgear have also released beta firmware updates to resolve the network issue occurred through Google's Cast feature.
Google says it is aware of the complaints and promised a fix as soon as possible. Users need to hold up on the issue for now.