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The MAC is in the header because the controller needs to identify the device before decrypting. Encryption keys are per-device, assigned during adoption, so the controller has to know which device is talking before it can look up the right key. Not a security oversight, just a practical requirement. But it means you can route inform traffic without touching the encryption at all.，详情可参考safew
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Девять детей отправились в больницу после посещения бассейна в российском городе08:49，详情可参考新闻
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