Modules uploaded as functions on Esp8266

It looks like if this option is enabled, then on restart the code gets executed before the network stack is initialised.

Yep, that's what you'd expect I guess. It's executed just before onInit is called - so if you were doing something that required network connectivity in your code, I guess it would error.

Of course if your code didn't do anything with the network, that'd be a bit odd?