Packet #25375723

Database ID:	25375723
Mesh Packet ID:	`0x7b50a06a` Used for correlation across gateways
Timestamp:	2025-12-03 09:09:27 UTC
From Node:	d3st_fx (D3FX)
To Node:	!00000001 (0001)
Success:	Processed
Protocol:	NEIGHBORINFO_APP Port: 71

Gateway:	d3st_fx (D3FX)
Channel:	LongFast
RSSI:	Unknown
SNR:	Unknown
Hop Info:	0/3 hops Start: 3, Limit: 3
Relay Node:	`fc` D3FX Last byte of the last hop that relayed this packet - Candidate source node(s) based on 0-hop direct receptions

Reporting Node:	d3st_fx (D3FX)
Last Sent By:	d3st_fx (D3FX)
Broadcast Interval:	14400 seconds
Neighbors Found:	2

Neighbor Node	SNR	Last Heard	Broadcast Interval	Signal Quality
Layana (LAYN)	6.8 dB	Unknown	Unknown	Excellent
GLUKHAR_92d9 (GLUK)	-15.2 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:	41 bytes
Gateway:	!9e9fb8fc
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`	`!9e9fb8fc` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (41 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`2661267708` Source node ID	uint32
`to`	`1` Target node ID	uint32
`decoded.portnum`	`71` NEIGHBORINFO_APP	enum
`decoded.payload_length`	`41` 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`	`1764752965` 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`	`252` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1764752967.1197906` 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:	`!9e9fb8fc`
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:	41 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "node_id": 2661267708, "last_sent_by_id": 2661267708, "node_broadcast_interval_secs": 14400, "neighbors": [ { "node_id": 321483384, "snr": 6.75, "last_rx_time": null, "node_broadcast_interval_secs": null, "last_rx_time_str": "Unknown", "node_name": "Layana (LAYN)" }, { "node_id": 912823001, "snr": -15.25, "last_rx_time": null, "node_broadcast_interval_secs": null, "last_rx_time_str": "Unknown", "node_name": "GLUKHAR_92d9 (GLUK)" } ], "neighbor_count": 2, "node_name": "d3st_fx (D3FX)", "last_sent_by_name": "d3st_fx (D3FX)" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!9e9fb8fc", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2661267708, "to": 1, "id": 2068881514, "rx_time": 1764752965, "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": 252, "tx_after": 0, "decoded": { "portnum": 71, "payload": "08fcf1fef40910fcf1fef40918c070220b08f8e4a59901150000d840220b08d9a5a2b30315000074c1", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "node_id": 2661267708, "last_sent_by_id": 2661267708, "node_broadcast_interval_secs": 14400, "neighbors": [ { "node_id": 321483384, "snr": 6.75 }, { "node_id": 912823001, "snr": -15.25 } ], "type": "protobuf", "portnum": "NEIGHBORINFO_APP", "message_class": "NeighborInfo" } } } }

Raw Packet Data (41 bytes)

08fcf1fef40910fcf1fef40918c070220b08f8e4a59901150000d840220b08d9a5a2b30315000074c1

Hex Analysis:

Size:	41 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 #25375723 Success

Packet Information

Payload Data

Decoded Data:

Neighbor Information Report

2

Neighbor Details