Rgds,
The issue was resolved with the introduction of the mDNS API.
I am currently downloading the Arduino IDE (332 MB) to trace the code and SDK calls.
Unfortunately, I have reached a dead end in tracing back the Arduino IDE code. The call to "Wifi.softAP(SSID);" from the Arduino sketch is what appears to start the ESP8266 DHCP server, but the code being executed is hidden in a binary file.