Help please..

[Karthik RC <karthikeyan-rc@xxxxxxxxxxxxxx>]

I'm newer to htis group.

whether the  explanation for below mentioned rule is correct?
the forward chain will reject  the packet with mac address 
00:01:23:45:67:89 whose source ip is not eqaul to  192.168.1.2



iptables -A FORWARD -m mac --mac-source 00:01:23:45:67:89 ! -s 
192.168.1.2 -j REJECT