mDNS not announcing, mDNS scan/query utility

Using esp32 with latest dev V2.

After wifi connection I see this

WARNING: Wifi:startMDNS - espressif

But when I do a mdns-scan from my dev machine I do not see an expected espressif.local

when it says startMDNS is it not announcing/responding?

Further what is that state of the utility mDNS module (for scanning, and querying from the esp device) that I see here at this gist. What it added. I see no mDNS module listed.
https://github.com/espruino/Espruino/iss­ues/1376#issuecomment-447653649