:INPUT,FORWARD,OUTPUT -m statistic;;FAIL -m statistic --mode random ! --probability 0.50000000000;=;OK -m statistic --mode random ! --probability 1.1;;FAIL -m statistic --probability 1;;FAIL -m statistic --mode nth ! --every 5 --packet 2;=;OK -m statistic --mode nth ! --every 5;;FAIL -m statistic --mode nth ! --every 5 --packet 5;;FAIL