chirpstack confirm message

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What is the ACK mechanism of the "confirm" message in ChirpStack? Why is my LoRaWAN gateway very close to my LoRaWAN node, with an RSI of around -50, and why did the server still return "unconfirm" when I sent the "confirm" message to it? I don't understand this. Logically speaking, this shouldn't happen.

1 Answers

Can the LoRaWAN data frame be expanded, one field is used to indicate Confirmed or Unconfirmed.