diff --git a/include/net/dst.h b/include/net/dst.h
index 7aa667d2ea4dffed03e5f97f4b7286765df291cc..17d21aec5170d09e16ea0d3a3dc0db4b14e67be0 100644
--- a/include/net/dst.h
+++ b/include/net/dst.h
@@ -105,7 +105,7 @@ struct dst_entry {
 struct dst_metrics {
 	u32		metrics[RTAX_MAX];
 	refcount_t	refcnt;
-};
+} __aligned(4);		/* Low pointer bits contain DST_METRICS_FLAGS */
 extern const struct dst_metrics dst_default_metrics;
 
 u32 *dst_cow_metrics_generic(struct dst_entry *dst, unsigned long old);