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-rw-r--r--extensions/libipt_length.man2
1 files changed, 1 insertions, 1 deletions
diff --git a/extensions/libipt_length.man b/extensions/libipt_length.man
index 72a6b5dc..43bbdcfd 100644
--- a/extensions/libipt_length.man
+++ b/extensions/libipt_length.man
@@ -1,4 +1,4 @@
This module matches the length of a packet against a specific value
or range of values.
.TP
-.BR "--length " "\fIlength\fP[:\fIlength\fP]"
+.BR "--length " "[!] \fIlength\fP[:\fIlength\fP]"