iptunnel: Set tun_flags in the iptunnel_metadata_reply from src

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 <[email protected]> Signed-off-by: David S. Miller <[email protected]>
modi0012 · Dec 24, 2018 · 7bdca37 · 7bdca37
1 parent f2ab958
commit 7bdca37
Showing 1 changed file with 1 addition and 0 deletions.
diff --git 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;