1 .TP 2 [\fB!\fP] \fB\-\-mac\-source\fP \fIaddress\fP 3 Match source MAC address. It must be of the form XX:XX:XX:XX:XX:XX. 4 Note that this only makes sense for packets coming from an Ethernet device 5 and entering the 6 .BR PREROUTING , 7 .B FORWARD 8 or 9 .B INPUT 10 chains. 11
