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-rw-r--r--src/ipcalc.14
1 files changed, 4 insertions, 0 deletions
diff --git a/src/ipcalc.1 b/src/ipcalc.1
index d5a3e39f..82510e95 100644
--- a/src/ipcalc.1
+++ b/src/ipcalc.1
@@ -30,6 +30,10 @@ not use the default netmasks, in which case an inappropriate value will
be returned.
.TP
+\fB\-p\fR, \fB\-\-prefix\fR
+Show the prefix for the given mask/IP address.
+
+.TP
\fB\-n\fR, \fB\-\-network\fR
Display the network address for the given IP address and netmask.