Packet #3957955

Database ID:	3957955
Mesh Packet ID:	`0x0d3acbf8` Used for correlation across gateways
Timestamp:	2025-07-17 09:52:17 UTC
From Node:	Mec Rocket Meco (MRM)
To Node:	!00000001 (0001)
Success:	Processed
Protocol:	NEIGHBORINFO_APP Port: 71

Gateway:	Mec Rocket Meco (MRM)
Channel:	MediumSlow
RSSI:	Unknown
SNR:	Unknown
Hop Info:	0/3 hops Start: 3, Limit: 3

Reporting Node:	Mec Rocket Meco (MRM)
Last Sent By:	Mec Rocket Meco (MRM)
Broadcast Interval:	14400 seconds
Neighbors Found:	4

Neighbor Node	SNR	Last Heard	Broadcast Interval	Signal Quality
!433de240 (e240)	7.2 dB	Unknown	Unknown	Excellent
!a0cc71e8 (71e8)	-4.8 dB	Unknown	Unknown	Fair
Rigel🗼🌞 (RIG)	-14.8 dB	Unknown	Unknown	Poor
[matto] Base 🗼 (MB)	-15.8 dB	Unknown	Unknown	Poor

Raw Packet Analysis

Complete field breakdown and MQTT privacy/exposure analysis

Packet Structure

MQTT Packet Flow:
ServiceEnvelope (MQTT layer) → MeshPacket (Mesh layer) → Decoded Payload (Application data)

Total Size:	67 bytes
Gateway:	!a0ca8798
Channel:	MediumSlow
Payload Type:	NEIGHBORINFO_APP
Hop Count:	Unknown / 3

Privacy Summary

Exposure Level:
Direct Message

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
+ 3 more...

Exposure Risks:
⚠ Packet visible to MQTT subscribers

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!a0ca8798` Node ID format
`channel_id`	`MediumSlow`
`packet`	`MeshPacket` (67 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`2697627544` Source node ID	uint32
`to`	`1` Target node ID	uint32
`decoded.portnum`	`71` NEIGHBORINFO_APP	enum
`decoded.payload_length`	`67` bytes	size
`hop_limit`	`3` Remaining hops allowed	uint32
`hop_start`	`3` Initial hop limit	uint32
`hops_taken`	`0` Calculated: hop_start - hop_limit	derived
`rx_rssi`	Not set	int32
`rx_snr`	Not set	float
`rx_time`	`1752745936` Receive timestamp	fixed32
`via_mqtt`	False Direct LoRa transmission	bool
`want_ack`	False No ACK requested	bool
`priority`	`10` Packet priority level	enum
`delayed`	Not set	enum
`channel`	Not set	uint32
`pki_encrypted`	False Standard encryption	bool
`next_hop`	Not set	uint32
`relay_node`	`152` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1752745937.479424` Unix timestamp	uint32

MQTT Privacy & Exposure Analysis

Analysis of privacy features and exposure risks when packet is shared via MQTT

Exposure Level: Direct Message

Privacy Features:

✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
✓ Custom channel: MediumSlow
✓ Gateway node ID tracked
✓ Zero-hop: direct from source to MQTT gateway

Exposure Risks:

⚠ Packet visible to MQTT subscribers

MQTT-Specific Fields

Gateway ID:	`!a0ca8798`
Zero Hop Policy:	Enabled Direct gateway connection

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NEIGHBORINFO_APP
Size:	67 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "node_id": 2697627544, "last_sent_by_id": 2697627544, "node_broadcast_interval_secs": 14400, "neighbors": [ { "node_id": 1128129088, "snr": 7.25, "last_rx_time": null, "node_broadcast_interval_secs": null, "last_rx_time_str": "Unknown", "node_name": "!433de240" }, { "node_id": 2697753064, "snr": -4.75, "last_rx_time": null, "node_broadcast_interval_secs": null, "last_rx_time_str": "Unknown", "node_name": "!a0cc71e8" }, { "node_id": 3052529474, "snr": -14.75, "last_rx_time": null, "node_broadcast_interval_secs": null, "last_rx_time_str": "Unknown", "node_name": "Rigel🗼🌞 (RIG)" }, { "node_id": 1127941960, "snr": -15.75, "last_rx_time": null, "node_broadcast_interval_secs": null, "last_rx_time_str": "Unknown", "node_name": "[matto] Base 🗼 (MB)" } ], "neighbor_count": 4, "node_name": "Mec Rocket Meco (MRM)", "last_sent_by_name": "Mec Rocket Meco (MRM)" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!a0ca8798", "channel_id": "MediumSlow", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2697627544, "to": 1, "id": 221957112, "rx_time": 1752745936, "rx_snr": 0.0, "rx_rssi": 0, "hop_limit": 3, "hop_start": 3, "via_mqtt": 0, "want_ack": 0, "priority": 10, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 152, "tx_after": 0, "decoded": { "portnum": 71, "payload": "08988faa860a10988faa860a18c070220b08c0c4f79904150000e840220b08e8e3b1860a15000098c0220b08c2cec7af0b1500006cc1220b08c88eec99041500007cc1", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "node_id": 2697627544, "last_sent_by_id": 2697627544, "node_broadcast_interval_secs": 14400, "neighbors": [ { "node_id": 1128129088, "snr": 7.25 }, { "node_id": 2697753064, "snr": -4.75 }, { "node_id": 3052529474, "snr": -14.75 }, { "node_id": 1127941960, "snr": -15.75 } ], "type": "protobuf", "portnum": "NEIGHBORINFO_APP", "message_class": "NeighborInfo" } } } }

Raw Packet Data (67 bytes)

08988faa860a10988faa860a18c070220b08c0c4f79904150000e840220b08e8e3b1860a15000098c0220b08c2cec7af0b1500006cc1220b08c88eec99041500007cc1

Hex Analysis:

Size:	67 bytes
Format:	Protobuf (Protocol Buffers)
Encoding:	Binary with varint and length-delimited fields

This is the raw protobuf-encoded payload as received from MQTT. The structure follows the Meshtastic protobuf schema definitions.

Packet #3957955 Success

Packet Information

Payload Data

Decoded Data:

Neighbor Information Report

4

Neighbor Details