From: wenxu <we...@ucloud.cn>
ip l add tun type gretap external
ip r a 10.0.0.2 encap ip id 1000 dst 172.168.0.2 key dev tun
ip a a 10.0.0.1/24 dev tun
The peer arp request to 10.0.0.1 with tunnel_id, but the arp reply
only set the tun_id but not the tun_flags with TUNNEL_KEY. The arp
reply packet don't contain tun_id field.
Signed-off-by: wenxu <we...@ucloud.cn>
---
net/ipv4/ip_tunnel_core.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/net/ipv4/ip_tunnel_core.c b/net/ipv4/ip_tunnel_core.c
index c857ec6..9a0e67b 100644
--- a/net/ipv4/ip_tunnel_core.c
+++ b/net/ipv4/ip_tunnel_core.c
@@ -151,6 +151,7 @@ struct metadata_dst *iptunnel_metadata_reply(struct
metadata_dst *md,
sizeof(struct in6_addr));
else
dst->key.u.ipv4.dst = src->key.u.ipv4.src;
+ dst->key.tun_flags = src->key.tun_flags;
dst->mode = src->mode | IP_TUNNEL_INFO_TX;
return res;
--
1.8.3.1
