Arduino: Is sniffing packet (monitor mode) in ESP8266 possible with arduino core

[pratiklodha95]

We want to analyse the packets without assigning any IP address to the client.

[igrr]

It is, although there is no Arduino-specific API for that. You can use ESP IoT SDK functions if you add user_interface.h to your sketch:

extern "C" {
  #include <user_interface.h>
}

and then call wifi_set_promiscuous_rx_cb, wifi_promiscuous_enable, wifi_set_channel, etc, as described in SDK documentation.