From 2aec025e16b35ae90c96deee16300643fd2e5748 Mon Sep 17 00:00:00 2001
From: Ivan Delamer <delamer@inicotech.com>
Date: Tue, 5 May 2015 13:00:17 -0600
Subject: [PATCH] Bug fix: properly use unspecified source address for router
 solicitation if needed.

---
 src/core/ipv6/nd6.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/core/ipv6/nd6.c b/src/core/ipv6/nd6.c
index 0dc3e529..9f8a59d0 100644
--- a/src/core/ipv6/nd6.c
+++ b/src/core/ipv6/nd6.c
@@ -1030,7 +1030,7 @@ nd6_send_rs(struct netif * netif)
   /* Send the packet out. */
   ND6_STATS_INC(nd6.xmit);
 
-  err = ip6_output_if(p, src_addr, &multicast_address,
+  err = ip6_output_if(p, (src_addr == IP6_ADDR_ANY6) ? NULL : src_addr, &multicast_address,
       LWIP_ICMP6_HL, 0, IP6_NEXTH_ICMP6, netif);
   pbuf_free(p);