1 files changed, 7 insertions, 3 deletions

diff --git a/include/net/dst.h b/include/net/dst.h
index 621e3513ef5e..9a7881066fb3 100644
--- a/include/net/dst.h
+++ b/include/net/dst.h
@@ -396,11 +396,15 @@ static inline void dst_confirm(struct dst_entry *dst)
 static inline int dst_neigh_output(struct dst_entry *dst, struct neighbour *n,
                                    struct sk_buff *skb)
 {
-        struct hh_cache *hh;
+        const struct hh_cache *hh;
+
+        if (dst->pending_confirm) {
+                unsigned long now = jiffies;
 
-        if (unlikely(dst->pending_confirm)) {
-                n->confirmed = jiffies;
                 dst->pending_confirm = 0;
+                /* avoid dirtying neighbour */
+                if (n->confirmed != now)
+                        n->confirmed = now;
         }
 
         hh = &n->hh;