From 434ddab2d405b8917ed4925d4973c442604218cf Mon Sep 17 00:00:00 2001
From: Alfred Bratterud <alfred.bratterud@hioa.no>
Date: Tue, 21 Jun 2016 21:31:16 +0200
Subject: [PATCH] Fix #595

---
 api/net/ethernet.hpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/api/net/ethernet.hpp b/api/net/ethernet.hpp
index 8dc1e20c40..20375c8f2a 100644
--- a/api/net/ethernet.hpp
+++ b/api/net/ethernet.hpp
@@ -73,8 +73,8 @@ namespace net {
 
       // hex string representation
       std::string str() const {
-        char eth_addr[17];
-        sprintf(eth_addr, "%1x:%1x:%1x:%1x:%1x:%1x",
+        char eth_addr[18];
+        snprintf(eth_addr, sizeof(eth_addr), "%1x:%1x:%1x:%1x:%1x:%1x",
                 part[0], part[1], part[2],
                 part[3], part[4], part[5]);
         return eth_addr;