path: root/extensions
diff options
authorJan Engelhardt <>2009-01-13 15:30:10 +0100
committerJan Engelhardt <>2009-01-14 06:44:35 +0100
commit3d12c3bbffb43182df9ac5c0ad549b095d30d021 (patch)
tree781d61f0153d4b4e3f09caf20c92103541ed13f8 /extensions
parent0e8984a053372879a19f2563eae568e9f67768f2 (diff)
doc: augment ICMP manpage by type/code syntax
The ICMP match module also allows numeric type/code as in "--icmp-type type/code". Document it. Based upon a patch by Victor Stinner <>. Signed-off-by: Jan Engelhardt <>
Diffstat (limited to 'extensions')
2 files changed, 3 insertions, 3 deletions
diff --git a/extensions/libipt_icmp.c b/extensions/libipt_icmp.c
index d0b7bb31..fa5a5409 100644
--- a/extensions/libipt_icmp.c
+++ b/extensions/libipt_icmp.c
@@ -102,7 +102,7 @@ static void icmp_help(void)
"icmp match options:\n"
"[!] --icmp-type typename match icmp type\n"
-" (or numeric type or type/code)\n");
+"[!] --icmp-type type[/code] (or numeric type or type/code)\n");
diff --git a/extensions/ b/extensions/
index 8c1bdbe4..1039704f 100644
--- a/extensions/
+++ b/extensions/
@@ -1,9 +1,9 @@
This extension can be used if `\-\-protocol icmp' is specified. It
provides the following option:
-[\fB!\fP] \fB\-\-icmp\-type\fP \fItypename\fP
+[\fB!\fP] \fB\-\-icmp\-type\fP {\fItype\fP[\fB/\fP\fIcode\fP]|\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
+ICMP type, type/code pair, or one of the ICMP type names shown by the command
iptables \-p icmp \-h