This extension is loaded if `--protocol ipv6-icmp' or `--protocol icmpv6' is
specified. It provides the following option:
.TP
.BR "--icmpv6-type " "[!] \fItypename\fP"
This allows specification of the ICMP type, which can be a numeric
IPv6-ICMP type, or one of the IPv6-ICMP type names shown by the command
.nf
 ip6tables -p ipv6-icmp -h
.fi