name of esp32 in nmap command

[picpic020961]

Bonjour ,
in my local network , many esp32.
for find IP , use nmap but the name of device is some time empty (not in this sample)
from where is this name in esp32 ?
not os.uname ...
Thanks for help

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nmap -sP 192.168.43.0/24
Starting Nmap 7.70 ( https://nmap.org ) at 2022-08-25 12:00 CEST
Nmap scan report for 192.168.43.1
Host is up (0.012s latency).
Nmap scan report for raspberrypi-2 (192.168.43.172)
Host is up (0.0030s latency).
Nmap scan report for espressif  (192.168.43.177)
Host is up (0.064s latency).
Nmap done: 256 IP addresses (3 hosts up) scanned in 2.78 seconds

[jimmo]

from where is this name in esp32 ?

This can be configured by calling config() on your station interface and setting "hostname".
See https://docs.micropython.org/en/latest/ ... LAN.config

[picpic020961]

Thanks Jimmo
tested : changed and display again = OK
but after reboot is the old value displayed

how to debug ?

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MicroPython v1.19.1-269-g94a19f106 on 2022-08-15; ESP32 module with ESP32

[jimmo]

but after reboot is the old value displayed

You need to configure the WiFi at the start of your program so it happens on every boot (including setting any config options).

[picpic020961]

OK works fine !
Thanks