How Can a Manufacturer Ship 2 Devices With The Same MAC Address?

In a discussion, a member was talking about experiences he had with XM and TVT shipping devices with the same MAC address.

It is shocking to me since it is not a hard thing to avoid.

Anyone have any idea why they are doing this? Incompetence? Does it save money on something or?

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***'* **** *****. **'* *** * ***, *** ** ** a*** ******** *******.

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***** **** **** **** **** **** *** **** ******* ***'* over **** **** * ****** ************.

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*****, **** ***********, ****** *** *******!

** ***** ******* ** ** *****, ** ** *** ** if *** ********* *** **** ** ********* / ******** *********.

*** ********* **** */** ** * ***** *** ******.

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** ***** **** *** * ***** ***** **** **** **** repaired *** *** ******* ***** ********, *** *** ****** *** programming **** *** *******?