Now that the new Ethernet shields are coming with a sticker giving them a MAC address do you have to use it??? Is it burned into ROM on the 5100 chip?
As I understand it you still have to include a Mac address in your code for Ethernet.begin()
book_woorm:
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As I understand it you still have to include a Mac address in your code for Ethernet.begin()
it's not about "still having to include" it - the MAC address is an ESSENTIAL piece of information for internet communication.
it's actually an improvement that devices have the MAC address assigned, instead of creating one at random which could cause clashes if someone else (other device) has the same address - just think how much of a mess it would be if someone else in the world had your exact same phone number.