1 This extension can be used if `\-\-protocol ipv6\-icmp' or `\-\-protocol icmpv6' is 2 specified. It provides the following option: 3 .TP 4 [\fB!\fP] \fB\-\-icmpv6\-type\fP \fItype\fP[\fB/\fP\fIcode\fP]|\fItypename\fP 5 This allows specification of the ICMPv6 type, which can be a numeric 6 ICMPv6 7 .IR type , 8 .IR type 9 and 10 .IR code , 11 or one of the ICMPv6 type names shown by the command 12 .nf 13 ip6tables \-p ipv6\-icmp \-h 14 .fi 15