diff --git a/net/ipv6/xfrm6_output.c b/net/ipv6/xfrm6_output.c
index 0af823cf7f1fb7561b481a814ed99ede1941ddba..5ee5a031bc93a85b453139eaa7581067dcf541d3 100644
--- a/net/ipv6/xfrm6_output.c
+++ b/net/ipv6/xfrm6_output.c
@@ -72,6 +72,7 @@ int xfrm6_prepare_output(struct xfrm_state *x, struct sk_buff *skb)
 #endif
 
 	skb->protocol = htons(ETH_P_IPV6);
+	skb->local_df = 1;
 
 	return x->outer_mode->output2(x, skb);
 }