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I was playing around with the network address setting of my WiFi adapter and realized that having a hexadecimal number as mac was not the only condition to make it valid.
To cut to the chase,
34:34:45:79:34:54
is a valid mac address, whereas
33:34:45:79:34:54 is invalid.
Both these mac addresses are random hexadecimals that I just made, but one works and the other doesn't. Why is this?
1Only specific mac addresses are actually valid. The IEEE 802 standard defines which mac addresses are valid. In both cases you have hexadecimal values though. – Ramhound – 2017-05-19T16:28:34.590
5Wikipedia article on Mac address has most of the information. At least it has the information about the first two hexadecimals. Essentially you made it a multicast instead of unicast address. – Seth – 2017-05-19T16:28:54.510