This extension can be used if `--protocol ipv6-icmp' or `--protocol icmpv6' is specified. It provides the following option:

[!] --icmpv6-type type[/code]|typename
    This allows specification of the ICMPv6 type, which can be a numeric ICMPv6 type, type and code, or one of the ICMPv6 type names shown by the command
     ip6tables -p ipv6-icmp -h