:INPUT,FORWARD,OUTPUT -m icmpv6;;FAIL -p ipv6-icmp -m icmp6 --icmpv6-type 1/0;=;OK -p ipv6-icmp -m icmp6 --icmpv6-type 2;=;OK # cannot use option twice: -p ipv6-icmp -m icmp6 --icmpv6-type no-route --icmpv6-type packet-too-big;;FAIL