MAC Address

[Anderson Wagner]

I have a firewall running on a FreeBSD 4.10-STABLE with ipfw.

My firewall is working very well, but i started to log the rules and
somethig strange appears in the log....

Jan 28 10:44:15 host /kernel: ipfw: 880 Accept MAC in via fxp1
Jan 28 10:44:15 host /kernel: ipfw: 880 Accept MAC in via fxp1
Jan 28 10:44:15 host /kernel: ipfw: 880 Accept MAC in via rl1
Jan 28 10:44:15 host /kernel: ipfw: 880 Accept MAC in via rl1
Jan 28 10:44:16 host /kernel: ipfw: 880 Accept MAC in via fxp1

what is it ????