Restrictions on MAC Addresses [closed]

StackOverflow https://stackoverflow.com/questions/16311439

Question

I programmed a MAC address generator quite a while ago and I've lost the source code. While I programmed it, I distinctly remember that there were certain rules that needed to be followed to generate a MAC address, but I can't find them.

I think it was something like the second character needs to be 0 or something along those lines.

Was it helpful?

Solution

The first bit needs to be zero for a unicast address. For a multicast address, that bit must be 1.

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