From f4d0c660ca403e933d51093167c0d01526c7f9d1 Mon Sep 17 00:00:00 2001
From: Simon Kelley <simon@thekelleys.org.uk>
Date: Mon, 18 Jan 2016 12:51:08 +0000
Subject: [PATCH] Fix sporadic crash in find_mac() - hwlen must be zero for
 empty entries.

---
 src/arp.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/arp.c b/src/arp.c
index 968455c..d70d2af 100644
--- a/src/arp.c
+++ b/src/arp.c
@@ -188,7 +188,8 @@ int find_mac(union mysockaddr *addr, unsigned char *mac, int lazy, time_t now)
       arps = arp;
       arp->status = ARP_EMPTY;
       arp->family = addr->sa.sa_family;
-      
+      arp->hwlen = 0;
+
       if (addr->sa.sa_family == AF_INET)
 	arp->addr.addr.addr4.s_addr = addr->in.sin_addr.s_addr;
 #ifdef HAVE_IPV6