delete correct rule, disallow duplicate rule addition. caught by Michael Coulter <mjc@bitz.ca>
delete correct rule, disallow duplicate rule addition. caught by Michael Coulter <mjc@bitz.ca>

kbandla/libdnet,kbandla/libdnet,wtfbbqhax/libdnet,kbandla/libdnet,jncornett/libdnet,jncornett/libdnet,wtfbbqhax/libdnet,wtfbbqhax/libdnet,jncornett/libdnet