Hi,   Did you have any answer for 3. ?   The Meraki example is the following client MAC is 11:22:33:44:55:66 org secret is t3lrdd least significant 4 bytes of SHA1(112233445566t3Irdd) = 0x0e456406   But when I try that myself, I don't find the same : SHA1(112233445566t3Irdd)=f552bfdca00b431eb0362ee5f638f0572c97475f least significant 4 bytes : 2c97475f   Any idea on how to find 0e456406 ? ... View more