nd #r.options >= 2 and r.options[1] == "MAC" then
		if not clients[r.options[2]:lower()] then
			clients[r.options[2]:lower()] = {
				start  = 0,
				limit  = 0,
				mac    = r.options[2]:upper(),
				policy = ( r.target == "RETURN" ) and "whitelist" or "blacklist",
				packets = 0,
				bytes   = 0
			}
		end
	end
end

for mac, client in pairs(clients) do
	client.bytes_in    = 0
	client.bytes_out   = 0
	client.packets_in  = 0
	client.packets_out = 0

	if client.ipaddr then
		local rin  = ipt:find({table="m