diff --git a/include/net/dst.h b/include/net/dst.h
index fe62fe2eb781c12289346b9f1d3ddba037c46736..8224dad2ae9460fb3ef3ace54f4442e76463ac04 100644
--- a/include/net/dst.h
+++ b/include/net/dst.h
@@ -82,7 +82,7 @@ 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);