--- /dev/null
+This extension can be used if `--protocol ipv6-icmp' or `--protocol icmpv6' is
+specified. It provides the following option:
+.TP
+[\fB!\fP] \fB--icmpv6-type\fP \fItype\fP[\fB/\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