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-rw-r--r--extensions/libip6t_length.man6
1 files changed, 3 insertions, 3 deletions
diff --git a/extensions/libip6t_length.man b/extensions/libip6t_length.man
index 72a6b5dc..d781a04b 100644
--- a/extensions/libip6t_length.man
+++ b/extensions/libip6t_length.man
@@ -1,4 +1,4 @@
-This module matches the length of a packet against a specific value
-or range of values.
+This module matches the length of the IPv6 payload in octets, or range of it.
+IPv6 header itself isn't counted.
.TP
-.BR "--length " "\fIlength\fP[:\fIlength\fP]"
+.BR "--length " "[!] \fIlength\fP[:\fIlength\fP]"