Packet #3954544

Database ID:	3954544
Mesh Packet ID:	`0x76ee81bb` Used for correlation across gateways
Timestamp:	2025-07-17 08:54:23 UTC
From Node:	SkG@Home 🗼🌐 (SkGH)
To Node:	!00000001 (0001)
Success:	Processed
Protocol:	NEIGHBORINFO_APP Port: 71

Gateway:	SkG@Home 🗼🌐 (SkGH)
Channel:	MediumSlow
RSSI:	Unknown
SNR:	Unknown
Hop Info:	0/4 hops Start: 4, Limit: 4

Reporting Node:	SkG@Home 🗼🌐 (SkGH)
Last Sent By:	SkG@Home 🗼🌐 (SkGH)
Broadcast Interval:	14400 seconds
Neighbors Found:	3

Neighbor Node	SNR	Last Heard	Broadcast Interval	Signal Quality
SkG@Tracker 📱 (SkGT)	8.2 dB	Unknown	Unknown	Excellent
Zona Alta Rivas Vaciamadrid 📡 (Raq1)	-16.2 dB	Unknown	Unknown	Poor
[Nevermore] Perseo 🗼 (nvm1)	-17.0 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:	54 bytes
Gateway:	!db29e6a8
Channel:	MediumSlow
Payload Type:	NEIGHBORINFO_APP
Hop Count:	Unknown / 4

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`	`!db29e6a8` Node ID format
`channel_id`	`MediumSlow`
`packet`	`MeshPacket` (54 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`3676956328` Source node ID	uint32
`to`	`1` Target node ID	uint32
`decoded.portnum`	`71` NEIGHBORINFO_APP	enum
`decoded.payload_length`	`54` bytes	size
`hop_limit`	`4` Remaining hops allowed	uint32
`hop_start`	`4` 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`	`1752742462` 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`	`168` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1752742463.2362785` 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:	`!db29e6a8`
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:	54 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "node_id": 3676956328, "last_sent_by_id": 3676956328, "node_broadcast_interval_secs": 14400, "neighbors": [ { "node_id": 1555771960, "snr": 8.25, "last_rx_time": null, "node_broadcast_interval_secs": null, "last_rx_time_str": "Unknown", "node_name": "SkG@Tracker 📱 (SkGT)" }, { "node_id": 3677054628, "snr": -16.25, "last_rx_time": null, "node_broadcast_interval_secs": null, "last_rx_time_str": "Unknown", "node_name": "Zona Alta Rivas Vaciamadrid 📡 (Raq1)" }, { "node_id": 2687838088, "snr": -17.0, "last_rx_time": null, "node_broadcast_interval_secs": null, "last_rx_time_str": "Unknown", "node_name": "[Nevermore] Perseo 🗼 (nvm1)" } ], "neighbor_count": 3, "node_name": "SkG@Home 🗼🌐 (SkGH)", "last_sent_by_name": "SkG@Home 🗼🌐 (SkGH)" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!db29e6a8", "channel_id": "MediumSlow", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3676956328, "to": 1, "id": 1995342267, "rx_time": 1752742462, "rx_snr": 0.0, "rx_rssi": 0, "hop_limit": 4, "hop_start": 4, "via_mqtt": 0, "want_ack": 0, "priority": 10, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 168, "tx_after": 0, "decoded": { "portnum": 71, "payload": "08a8cda7d90d10a8cda7d90d18c070220b08b8e4ece5051500000441220b08a4cdadd90d15000082c1220b0888cfd4810a15000088c1", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "node_id": 3676956328, "last_sent_by_id": 3676956328, "node_broadcast_interval_secs": 14400, "neighbors": [ { "node_id": 1555771960, "snr": 8.25 }, { "node_id": 3677054628, "snr": -16.25 }, { "node_id": 2687838088, "snr": -17.0 } ], "type": "protobuf", "portnum": "NEIGHBORINFO_APP", "message_class": "NeighborInfo" } } } }

Raw Packet Data (54 bytes)

08a8cda7d90d10a8cda7d90d18c070220b08b8e4ece5051500000441220b08a4cdadd90d15000082c1220b0888cfd4810a15000088c1

Hex Analysis:

Size:	54 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 #3954544 Success

Packet Information

Payload Data

Decoded Data:

Neighbor Information Report

3

Neighbor Details