----- "Valdis Kletnieks" <Valdis.Kletnieks@vt.edu> wrote:

On Mon, 05 Apr 2010 17:26:53 EDT, "Patrick W. Gilmore" said:

...

I'm 3COM, I made ISA 10Base2 / 10Base5 cards in the 90s. I run out of MAC addresses. Instead of going to get more - if I even can! - I recycle those MAC addresses

There were several cases of production run errors from multiple vendors, where the MAC address went 14, 15, 16, 17, 17, 17, 17, *thwack*, 18, 19....

And to make the problem worse, they are likely to end up in the same shop, and you get them when you purchase several of them.