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