[X4U] MAC address vs ? Ethernet Address ?

[Craig A. Finseth]

	...
   > Again, there is no such thing as "_the_ true MAC address of the machine".
   >.........
   > 
   > Oh, yeah.  All of these can be changed under software control.
   > 
   > Craig

   So these numbers can be faked through software? They are not "burned" into
   the ethernet card itself?

Both.  The interface has factory-assigned default numbers that are unique.
However, the software can change them.

This is an integral part of the Ethernet interface specification and
some (ok, now obsolete) networking protocols rely on it (e.g.,
DECnet).

And "faked" is not the correct term: since the _only_ important
property of them is that they are unique in a contiguous layer 2
network and the value is _never_ supposed to be significant, it is
perfectly ok to make up whatever numbers you want: there is no meaning
to fake.

Craig