From: Xiaoguang Sun <sun.xiaoguang@yoyosys.com>
Date: Tue, 11 Mar 2014 13:18:46 +0100
Subject: MAC address format

Forwarded: http://lists.beasts.org/pipermail/iftop-users/2014-March/000413.html
---
 iftop.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/iftop.c b/iftop.c
index a090dcf..883782e 100644
--- a/iftop.c
+++ b/iftop.c
@@ -713,7 +713,7 @@ void packet_init() {
     if(have_hw_addr) {
       fprintf(stderr, "MAC address is:");
       for (i = 0; i < 6; ++i)
-	fprintf(stderr, "%c%02x", i ? ':' : ' ', (unsigned int)if_hw_addr[i]);
+	fprintf(stderr, "%c%02x", i ? ':' : ' ', (unsigned char)if_hw_addr[i]);
       fprintf(stderr, "\n");
     }