X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=datapath%2Fvport-gre.c;h=46e0be82a0bdf668033b20341473f9ae8023a8b2;hb=f3399cd5be32fb67364959d75b973a4c23f2b19a;hp=9c1c1cc825388ed64229f28058f338077c21d20f;hpb=465b509c7ce1023af9665ec2553c1c7baee5963e;p=sliver-openvswitch.git

diff --git a/datapath/vport-gre.c b/datapath/vport-gre.c
index 9c1c1cc82..46e0be82a 100644
--- a/datapath/vport-gre.c
+++ b/datapath/vport-gre.c
@@ -103,9 +103,12 @@ static struct sk_buff *gre_update_header(const struct vport *vport,
 						0));
 	/*
 	 * Allow our local IP stack to fragment the outer packet even if the
-	 * DF bit is set as a last resort.
+	 * DF bit is set as a last resort.  We also need to force selection of
+	 * an IP ID here because Linux will otherwise leave it at 0 if the
+	 * packet originally had DF set.
 	 */
 	skb->local_df = 1;
+	__ip_select_ident(ip_hdr(skb), dst, 0);
 
 	return skb;
 }