diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index f1be5c5c85ef..de2b1decd786 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -1756,6 +1756,7 @@ static struct rt6_info * ip6_rt_copy(struct rt6_info *ort)
 #ifdef CONFIG_IPV6_SUBTREES
 		memcpy(&rt->rt6i_src, &ort->rt6i_src, sizeof(struct rt6key));
 #endif
+		memcpy(&rt->rt6i_prefsrc, &ort->rt6i_prefsrc, sizeof(struct rt6key));
 		rt->rt6i_table = ort->rt6i_table;
 	}
 	return rt;