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A comment on Why couldn't MAC addresses be used instead of IPv4|6 for networking?. Parent comment

Re:Why couldn't MAC addresses be used instead of IPv4|6 for ... by sliverstorm on Wednesday July 25, 2012 @07:04PM (#4293524)
48 bits was intended to be globally unique

And it well could be, but guaranteeing uniqueness is rarely as easy of a problem as you might wish.

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