This modules adds and/or deletes entries from IP sets which can be defined by ipset(8).

--add-set setname flag[,flag...]
    add the address(es)/port(s) of the packet to the sets

--del-set setname flag[,flag...]
    delete the address(es)/port(s) of the packet from the sets, where flags are src and/or dst and there can be no more than six of them.

The bindings to follow must previously be defined in order to use
    multilevel adding/deleting by the SET target.