ip6_gre: fix flowi6_proto value in xmit path

In xmit path, we build a flowi6 which will be used for the output route lookup.
We are sending a GRE packet, neither IPv4 nor IPv6 encapsulated packet, thus the
protocol should be IPPROTO_GRE.

Fixes: c12b395a4664 ("gre: Support GRE over IPv6")
Reported-by: Matthieu Ternisien d'Ouville <matthieu.tdo@6wind.com>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 2 deletions

diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c
index f304471477dc..97299d76c1b0 100644
--- a/net/ipv6/ip6_gre.c
+++ b/net/ipv6/ip6_gre.c
@@ -782,7 +782,7 @@ static inline int ip6gre_xmit_ipv4(struct sk_buff *skb, struct net_device *dev)
                 encap_limit = t->parms.encap_limit;
 
         memcpy(&fl6, &t->fl.u.ip6, sizeof(fl6));
-        fl6.flowi6_proto = IPPROTO_IPIP;
+        fl6.flowi6_proto = IPPROTO_GRE;
 
         dsfield = ipv4_get_dsfield(iph);
 
@@ -832,7 +832,7 @@ static inline int ip6gre_xmit_ipv6(struct sk_buff *skb, struct net_device *dev)
                 encap_limit = t->parms.encap_limit;
 
         memcpy(&fl6, &t->fl.u.ip6, sizeof(fl6));
-        fl6.flowi6_proto = IPPROTO_IPV6;
+        fl6.flowi6_proto = IPPROTO_GRE;
 
         dsfield = ipv6_get_dsfield(ipv6h);
         if (t->parms.flags & IP6_TNL_F_USE_ORIG_TCLASS)