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-rw-r--r--ethtool.8.in7
1 files changed, 4 insertions, 3 deletions
diff --git a/ethtool.8.in b/ethtool.8.in
index b759746..115f8af 100644
--- a/ethtool.8.in
+++ b/ethtool.8.in
@@ -678,9 +678,10 @@ ah4 IPSEC AH over IPv4
esp4 IPSEC ESP over IPv4
.TE
.PP
-All fields below that include a mask option may either use "m" to
-indicate a mask, or may use the full name of the field with a "-mask"
-appended to indicate that this is the mask for a given field.
+For all fields that allow both a value and a mask to be specified, the
+mask may be specified immediately after the value using the \fBm\fR
+keyword, or separately using the field name keyword with \fB-mask\fR
+appended, e.g. \fBsrc-mask\fR.
.PD
.RE
.TP