Duplicate downlink in Multicast

[Akior]

• [ x] The issue is present in the latest release.
• [ x] I have searched the issues of this repository and believe that this is not a duplicate.

What happened?

Perform a POST /api/multicast-groups/{multicast_queue_item.multicast_group_id}/queue app-server show 2 message on same BS with same fCnt

What did you expect?

One message

Steps to reproduce this issue

Steps:

1. add 2 NS, EU and RU (don't know this importance)
2. create multicast group
3. add device class C
4. generate api Post

body: { "multicastQueueItem": { "data": "MTIz", "fCnt": 30000, "fPort": 5, "multicastGroupID": "29d20663-83b2-459c-9658-008ca6b7fdbb" } }

Could you share your log output?

Your Environment

Component	Version
Application Server	v3.10.0
Network Server	v3.9.0
Gateway Bridge	v3.9.1
Chirpstack API	REST API
Geolocation	Russia
Concentratord

[Akior]

Lora agent get exact one message, seems "cosmetic" bug

[brocaar]

How many gateways do you have? In some cases it is expected that one downlink payload is sent multiple times, e.g. when all devices can't be reached by a single gateway.

[Akior]

There are 6 gw. But lora agent visible only from one.

I get screenshot from GW logs, and agent get only one message not two, so there are duplicate log bug ?

How many gateways do you have? In some cases it is expected that one downlink payload is sent multiple times, e.g. when all devices can't be reached by a single gateway.