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