If we are in IV update in progress state, and receive a Secure Network
beacon with an IV index equal to last known IV index + 1, and IV update
flag set to 1, it should be ignored. See MshPRFv1.0.1 section 3.10.5.
---
mesh/net.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/mesh/net.c b/mesh/net.c
index dc3d1fd80..c225fdb9a 100644
--- a/mesh/net.c
+++ b/mesh/net.c
@@ -2671,6 +2671,10 @@ static bool update_iv_ivu_state(struct mesh_net *net, uint32_t iv_index,
if (iv_index == net->iv_index)
return false;
+ /* Ignore beacon with invalid IV index value */
+ if (net->iv_update && iv_index == net->iv_index + 1)
+ return false;
+
if (!net->iv_update) {
l_debug("iv_upd_state = IV_UPD_UPDATING");
net->iv_upd_state = IV_UPD_UPDATING;
--
2.20.1
