This extension can be used if `--protocol ipv6-icmp' or `--protocol icmpv6' is
specified. It provides the following option:
.TP
.BR "--icmpv6-type " "[!] \fItype\fP[/\fIcode\fP]|\fItypename\fP"
This allows specification of the ICMPv6 type, which can be a numeric
ICMPv6
.IR type ,
.IR type
and
.IR code ,
or one of the ICMPv6 type names shown by the command
.nf
 ip6tables -p ipv6-icmp -h
.fi