Mark 1 Amazon Echo Dot not reconnecting automatically

[Shnozz]

I have a number of Echo Dots. I notice that if I have an internet outage, the model 2 Dots automatically reconnect when the internet comes back up - they still require telling what to do but they are online. The Mk1 that I have, however, needs unplugging and reconnecting each time to regain its connection. Does anyone know if this is solvable?