Packet #14131352

Database ID:	14131352
Mesh Packet ID:	`0x599e2b76` Used for correlation across gateways
Timestamp:	2025-10-08 06:36:27 UTC
From Node:	Meshtastic b46c (b46c)
To Node:	!00000001 (0001)
Success:	Processed
Protocol:	NEIGHBORINFO_APP Port: 71

Gateway:	Leo Meshi (LMSI)
Channel:	LongFast
RSSI:	Unknown
SNR:	Unknown
Hop Info:	0/3 hops Start: 3, Limit: 3

Reporting Node:	Meshtastic b46c (b46c)
Last Sent By:	Meshtastic b46c (b46c)
Broadcast Interval:	14400 seconds
Neighbors Found:	4

Neighbor Node	SNR	Last Heard	Broadcast Interval	Signal Quality
Leo Meshi (LMSI)	0.0 dB	Unknown	Unknown	Good
Chirp11 (CHRP)	6.5 dB	Unknown	Unknown	Excellent
Trk2210 (tk22)	-15.5 dB	Unknown	Unknown	Poor
⚡️ NMG MIX BASE LH-BCN ⚡️ (NMG)	6.2 dB	Unknown	Unknown	Excellent

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:	62 bytes
Gateway:	!db29e9e8
Channel:	LongFast
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
+ 2 more...

Exposure Risks:
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!db29e9e8` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (62 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`2697639020` Source node ID	uint32
`to`	`1` Target node ID	uint32
`decoded.portnum`	`71` NEIGHBORINFO_APP	enum
`decoded.payload_length`	`62` 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`	`1759905385` 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`	`108` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1759905387.1736143` 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
✓ Gateway node ID tracked
✓ Zero-hop: direct from source to MQTT gateway

Exposure Risks:

⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers

MQTT-Specific Fields

Gateway ID:	`!db29e9e8`
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:	62 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "node_id": 2697639020, "last_sent_by_id": 2697639020, "node_broadcast_interval_secs": 14400, "neighbors": [ { "node_id": 3676957160, "snr": 0.0, "last_rx_time": null, "node_broadcast_interval_secs": null, "last_rx_time_str": "Unknown", "node_name": "Leo Meshi (LMSI)" }, { "node_id": 1530222935, "snr": 6.5, "last_rx_time": null, "node_broadcast_interval_secs": null, "last_rx_time_str": "Unknown", "node_name": "Chirp11 (CHRP)" }, { "node_id": 3234013712, "snr": -15.5, "last_rx_time": null, "node_broadcast_interval_secs": null, "last_rx_time_str": "Unknown", "node_name": "Trk2210 (tk22)" }, { "node_id": 3663392692, "snr": 6.25, "last_rx_time": null, "node_broadcast_interval_secs": null, "last_rx_time_str": "Unknown", "node_name": "⚡️ NMG MIX BASE LH-BCN ⚡️ (NMG)" } ], "neighbor_count": 4, "node_name": "Meshtastic b46c (b46c)", "last_sent_by_name": "Meshtastic b46c (b46c)" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!db29e9e8", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2697639020, "to": 1, "id": 1503538038, "rx_time": 1759905385, "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": 108, "tx_after": 0, "decoded": { "portnum": 71, "payload": "08ece8aa860a10ece8aa860a18c070220608e8d3a7d90d220b08d7b2d5d905150000d040220b0890c48c860c15000078c1220b08b4dfebd20d150000c840", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "node_id": 2697639020, "last_sent_by_id": 2697639020, "node_broadcast_interval_secs": 14400, "neighbors": [ { "node_id": 3676957160 }, { "node_id": 1530222935, "snr": 6.5 }, { "node_id": 3234013712, "snr": -15.5 }, { "node_id": 3663392692, "snr": 6.25 } ], "type": "protobuf", "portnum": "NEIGHBORINFO_APP", "message_class": "NeighborInfo" } } } }

Raw Packet Data (62 bytes)

08ece8aa860a10ece8aa860a18c070220608e8d3a7d90d220b08d7b2d5d905150000d040220b0890c48c860c15000078c1220b08b4dfebd20d150000c840

Hex Analysis:

Size:	62 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 #14131352 Success

Packet Information

Payload Data

Decoded Data:

Neighbor Information Report

4

Neighbor Details