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Date:   Sat,  5 Dec 2020 22:13:33 +0100
From:   Petr Machata <>
        Petr Machata <>
Subject: [PATCH iproute2-next v2 5/7] lib: print_color_rate(): Fix formatting small rates in IEC mode

ISO/IEC units are distinguished from the decadic ones by using a prefixes
like "Ki", "Mi" instead of "K" and "M". The current code inserts the letter
"i" after the decadic unit when in IEC mode. However it does so even when
the prefix is an empty string, formatting 1Kbit in IEC mode as "1000ibit".
Fix by omitting the letter if there is no prefix.

Signed-off-by: Petr Machata <>
 lib/json_print.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/json_print.c b/lib/json_print.c
index d28e957c9603..b086123ad1f4 100644
--- a/lib/json_print.c
+++ b/lib/json_print.c
@@ -333,7 +333,8 @@ int print_color_rate(bool use_iec, enum output_type type, enum color_attr color,
 		rate /= kilo;
-	rc = asprintf(&buf, "%.0f%s%sbit", (double)rate, units[i], str);
+	rc = asprintf(&buf, "%.0f%s%sbit", (double)rate, units[i],
+		      i > 0 ? str : "");
 	if (rc < 0)
 		return -1;

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