Mac filtering with ipfw2

[Steve Quezadas]

Hello,
 
I have tried and tried and tried to get mac filtering to work with
ipfw2. I have tried the usual sources (Google Groups, google, mailling
list, man pages, etc). Here it goes:
 
I basically want to allow traffic to come from one mac address. I am
trying to get the following rule to work:
 
ipfw add accept tcp from any to any MAC any 10:20:30:40:50:60
 
Yes, ipfw2 is on my freebsd system. This rule is basically: "allow
traffic from mac address 10:20:30:40:50:60 to anywhere on the
network".
 
What am I doing wrong?
 
- Steve