AP Wifi Problem

Hi! First thank you very much for the project and affort on the new firmware for NodeMCU :)
I have a strange problem maybe someone can confirm this and maybe we find a solution:
I have setup an AP with the following code on my NodeMCU v0.9:

function onInit() {
var wifi = require("Wifi");
wifi.disconnect();
wifi.startAP("APNAME", {password:"password"});
wifi.save();
}
save();

Every connection directly to the AP works fine, but if I am going to connect a virtual machine (Win/Ubuntu what ever) I do net get any IP address. My home router and android AP work without any problems and my VMs get an IP address. I am working with VMs since years so there is maybe really a problem with AP. Maybe someone can confirm this?

Thx