That's nice! Congratulations.
I have tried with 2 ESP8266 Master to Slave_1 OK.
Slave_1 returns via the "sendReplay (uint8_t * macAddr) function to the Master OK.
Then I added another slave_2,
like this: Master sends to slave_1 and slave_1 sends to slave_2, OK
How could I make a message from slave_2 return to Master? Thank you