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+This modules macthes IP sets which can be defined by ipset(8).
+.BR "--set " "setname flag[,flag...]"
+where flags are
+and there can be no more than six of them. Hence the command
+ iptables -A FORWARD -m set --set test src,dst
+will match packets, for which (depending on the type of the set) the source
+address or port number of the packet can be found in the specified set. If
+there is a binding belonging to the mached set element or there is a default
+binding for the given set, then the rule will match the packet only if
+additionally (depending on the type of the set) the destination address or
+port number of the packet can be found in the set according to the binding.