3 files changed, 16 insertions, 0 deletions

diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c
index ecd60733e5e2..90747f1973fe 100644
--- a/net/ipv6/ip6_gre.c
+++ b/net/ipv6/ip6_gre.c
@@ -724,6 +724,11 @@ static netdev_tx_t ip6gre_xmit2(struct sk_buff *skb,
                 ipv6_push_nfrag_opts(skb, &opt.ops, &proto, NULL);
         }
 
+        if (likely(!skb->encapsulation)) {
+                skb_reset_inner_headers(skb);
+                skb->encapsulation = 1;
+        }
+
         skb_push(skb, gre_hlen);
         skb_reset_network_header(skb);
         skb_set_transport_header(skb, sizeof(*ipv6h));
diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
index 1e55866cead7..46ba243605a3 100644
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -1027,6 +1027,12 @@ static int ip6_tnl_xmit2(struct sk_buff *skb,
                 init_tel_txopt(&opt, encap_limit);
                 ipv6_push_nfrag_opts(skb, &opt.ops, &proto, NULL);
         }
+
+        if (likely(!skb->encapsulation)) {
+                skb_reset_inner_headers(skb);
+                skb->encapsulation = 1;
+        }
+
         skb_push(skb, sizeof(struct ipv6hdr));
         skb_reset_network_header(skb);
         ipv6h = ipv6_hdr(skb);
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index a3437a4cd07e..fbfc5a83867f 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -888,6 +888,11 @@ static netdev_tx_t ipip6_tunnel_xmit(struct sk_buff *skb,
                 ttl = iph6->hop_limit;
         tos = INET_ECN_encapsulate(tos, ipv6_get_dsfield(iph6));
 
+        if (likely(!skb->encapsulation)) {
+                skb_reset_inner_headers(skb);
+                skb->encapsulation = 1;
+        }
+
         err = iptunnel_xmit(dev_net(dev), rt, skb, fl4.saddr, fl4.daddr,
                             IPPROTO_IPV6, tos, ttl, df);
         iptunnel_xmit_stats(err, &dev->stats, dev->tstats);