diff --git a/minissdpd/getroute.c b/minissdpd/getroute.c
index a8430d5..8f0c192 100644
--- a/minissdpd/getroute.c
+++ b/minissdpd/getroute.c
@@ -1,4 +1,4 @@
-/* $Id: getroute.c,v 1.3 2014/11/28 16:30:37 nanard Exp $ */
+/* $Id: getroute.c,v 1.4 2014/12/01 09:07:17 nanard Exp $ */
 /* MiniUPnP project
  * http://miniupnp.free.fr/ or http://miniupnp.tuxfamily.org/
  * (c) 2006-2014 Thomas Bernard
@@ -30,6 +30,23 @@
 #include "getroute.h"
 #include "upnputils.h"
 
+#if defined(__sun)
+static size_t _sa_len(const struct sockaddr *addr)
+{
+if(addr->sa_family == AF_INET)
+	return (sizeof(struct sockaddr_in));
+else if (addr->sa_family == AF_INET6)
+	return (sizeof(struct sockaddr_in6));
+else
+	return (sizeof(struct sockaddr));
+}
+#define SA_LEN(sa) (_sa_len(sa))
+#else
+#if !defined(SA_LEN)
+#define SA_LEN(sa) ((sa)->sa_len)
+#endif
+#endif
+
 int
 get_src_for_route_to(const struct sockaddr * dst,
                      void * src, size_t * src_len,