Dell server responding with two mac addresses

[David Christensen]

> I have a rather serious problem, I have three dell server (PE1800, 
> PE2950 and SC1425) the PE1800 is running FreeBSD 6.1. The 
> problem that I 
> have is that the PE1800 is responding with two mac adresses 
> on the same 
> network interface, has anywone seen this before? This causes 
> our router 
> to be confused on where to send the traffic so one of the 
> other machines 
> can't access anything outside our router. The first thought was that 
> dells IPMI-interface would have something to do with it but after 
> disabling IPMI on all machines the problem is still there.
> 

What LOM does the PE1800 use?

Dave