Packet #2238081

Database ID:	2238081
Mesh Packet ID:	`0x87c46f6e` Used for correlation across gateways
Timestamp:	2025-08-13 09:08:30 UTC
From Node:	Rotterdam Network - South (RN-1)
To Node:	!00000001 (0001)
Success:	Processed
Protocol:	NEIGHBORINFO_APP Port: 71

Gateway:	Rotterdam Network - South (RN-1)
Channel:	LongFast
RSSI:	Unknown
SNR:	Unknown
Hop Info:	0/3 hops Start: 3, Limit: 3

Reporting Node:	Rotterdam Network - South (RN-1)
Last Sent By:	Rotterdam Network - South (RN-1)
Broadcast Interval:	14400 seconds
Neighbors Found:	5

Neighbor Node	SNR	Last Heard	Broadcast Interval	Signal Quality
Albld_NLP1 (NLP1)	-15.0 dB	Unknown	Unknown	Poor
EHV-BRL-33m S&F ✅ (7.2) (Boca)	-14.8 dB	Unknown	Unknown	Poor
Homerunner (Hmrn)	-18.2 dB	Unknown	Unknown	Poor
EHV-Router-46m (6.2) ☀️ (Boca)	-12.8 dB	Unknown	Unknown	Poor
Meshtastic c368 (c368)	-3.8 dB	Unknown	Unknown	Fair

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:	80 bytes
Gateway:	!2896c518
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`	`!2896c518` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (80 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`680969496` Source node ID	uint32
`to`	`1` Target node ID	uint32
`decoded.portnum`	`71` NEIGHBORINFO_APP	enum
`decoded.payload_length`	`80` 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`	`1755068909` 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`	`24` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1755068910.881545` 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:	`!2896c518`
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:	80 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "node_id": 680969496, "last_sent_by_id": 680969496, "node_broadcast_interval_secs": 14400, "neighbors": [ { "node_id": 1118327080, "snr": -15.0, "last_rx_time": null, "node_broadcast_interval_secs": null, "last_rx_time_str": "Unknown", "node_name": "Albld_NLP1 (NLP1)" }, { "node_id": 3774230072, "snr": -14.75, "last_rx_time": null, "node_broadcast_interval_secs": null, "last_rx_time_str": "Unknown", "node_name": "EHV-BRL-33m S&F ✅ (7.2) (Boca)" }, { "node_id": 2697733976, "snr": -18.25, "last_rx_time": null, "node_broadcast_interval_secs": null, "last_rx_time_str": "Unknown", "node_name": "Homerunner (Hmrn)" }, { "node_id": 3618296060, "snr": -12.75, "last_rx_time": null, "node_broadcast_interval_secs": null, "last_rx_time_str": "Unknown", "node_name": "EHV-Router-46m (6.2) ☀️ (Boca)" }, { "node_id": 3663643496, "snr": -3.75, "last_rx_time": null, "node_broadcast_interval_secs": null, "last_rx_time_str": "Unknown", "node_name": "Meshtastic c368 (c368)" } ], "neighbor_count": 5, "node_name": "Rotterdam Network - South (RN-1)", "last_sent_by_name": "Rotterdam Network - South (RN-1)" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!2896c518", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 680969496, "to": 1, "id": 2277797742, "rx_time": 1755068909, "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": 24, "tx_after": 0, "decoded": { "portnum": 71, "payload": "08988adbc40210988adbc40218c070220b08a8a2a1950415000070c1220b08b8dcd8870e1500006cc1220b08d8ceb0860a15000092c1220b08fca1abbd0d1500004cc1220b08e886fbd20d15000070c0", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "node_id": 680969496, "last_sent_by_id": 680969496, "node_broadcast_interval_secs": 14400, "neighbors": [ { "node_id": 1118327080, "snr": -15.0 }, { "node_id": 3774230072, "snr": -14.75 }, { "node_id": 2697733976, "snr": -18.25 }, { "node_id": 3618296060, "snr": -12.75 }, { "node_id": 3663643496, "snr": -3.75 } ], "type": "protobuf", "portnum": "NEIGHBORINFO_APP", "message_class": "NeighborInfo" } } } }

Raw Packet Data (80 bytes)

08988adbc40210988adbc40218c070220b08a8a2a1950415000070c1220b08b8dcd8870e1500006cc1220b08d8ceb0860a15000092c1220b08fca1abbd0d1500004cc1220b08e886fbd20d15000070c0

Hex Analysis:

Size:	80 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 #2238081 Success

Packet Information

Payload Data

Decoded Data:

Neighbor Information Report

5

Neighbor Details