Nice evasion router vendors...
So... let me get this right...
There's a device on your (notoriously secure & unhackable) WiFi network, that can disable your router by sending a specific large, rapid sequence of packets.
And apparently that's the fault of the device manufacturer, not a DoS vulnerability in the router...?
While the chromecast clearly shouldn't be doing this, surely the routers should also not be behaving in this manner?
And blaming someone else for showing up a vulnerability in one of your products seems a bit childish...