Packet #769532

Database ID:	769532
Mesh Packet ID:	`0xda6e257c` Used for correlation across gateways
Timestamp:	2026-04-07 05:25:11 UTC
From Node:	Meshtastic a984 (a984)
To Node:	!00000001 (0001)
Success:	Processed
Protocol:	NEIGHBORINFO_APP Port: 71

Gateway:	Meshtastic a984 (a984)
Channel:	LongFast
RSSI:	Unknown
SNR:	Unknown
Hop Info:	0/3 hops Start: 3, Limit: 3
Relay Node:	`84` a984 Last byte of the last hop that relayed this packet - Candidate source node(s) based on 0-hop direct receptions

Reporting Node:	Meshtastic a984 (a984)
Last Sent By:	Meshtastic a984 (a984)
Broadcast Interval:	14400 seconds
Neighbors Found:	2

Neighbor Node	SNR	Last Heard	Broadcast Interval	Signal Quality
MT14f8-router001 (14f8)	-14.2 dB	Unknown	Unknown	Poor
Meshtastic 6a1c (6a1c)	0.0 dB	Unknown	Unknown	Good

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:	36 bytes
Gateway:	!9eeca984
Channel:	LongFast
Payload Type:	NEIGHBORINFO_APP
Hop Count:	0 / 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

Field	Value
`gateway_id`	`!9eeca984` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (36 bytes) Contains the actual mesh network packet

MeshPacket Fields

Canonical MeshPacket view reconstructed from stored protobuf bytes.

Field	Value	Type
`from`	`2666310020` Source node ID	uint32
`to`	`1` Target node ID	uint32
`decoded.portnum`	`NEIGHBORINFO_APP` NEIGHBORINFO_APP	enum
`decoded.payload_length`	`36` 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`	`1775539511` Receive timestamp	fixed32
`via_mqtt`	False Direct LoRa transmission	bool
`want_ack`	False No ACK requested	bool
`priority`	`BACKGROUND` Packet priority level	enum
`delayed`	Not set	enum
`channel`	`8` Channel index	uint32
`pki_encrypted`	False Standard encryption	bool
`next_hop`	Not set	uint32
`relay_node`	`132` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	Not set	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:	`!9eeca984`
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:	36 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "node_id": 2666310020, "last_sent_by_id": 2666310020, "node_broadcast_interval_secs": 14400, "neighbors": [ { "node_id": 1771836664, "snr": -14.25, "last_rx_time": null, "node_broadcast_interval_secs": null, "last_rx_time_str": "Unknown", "node_name": "MT14f8-router001 (14f8)" }, { "node_id": 3127536156, "snr": 0.0, "last_rx_time": null, "node_broadcast_interval_secs": null, "last_rx_time_str": "Unknown", "node_name": "Meshtastic 6a1c (6a1c)" } ], "neighbor_count": 2, "node_name": "Meshtastic a984 (a984)", "last_sent_by_name": "Meshtastic a984 (a984)" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "packet": { "from": 2666310020, "to": 1, "channel": 8, "decoded": { "portnum": "NEIGHBORINFO_APP", "payload": "CITTsvcJEITTsvcJGMBwIgsI+KnwzAYVAABkwSIGCJzUqdML", "bitfield": 1 }, "id": 3664651644, "rx_time": 1775539511, "hop_limit": 3, "priority": "BACKGROUND", "hop_start": 3, "relay_node": 132 }, "channel_id": "LongFast", "gateway_id": "!9eeca984" }, "mesh_packet": { "from": 2666310020, "to": 1, "channel": 8, "decoded": { "portnum": "NEIGHBORINFO_APP", "payload": "CITTsvcJEITTsvcJGMBwIgsI+KnwzAYVAABkwSIGCJzUqdML", "bitfield": 1, "parsed_payload": { "node_id": 2666310020, "last_sent_by_id": 2666310020, "node_broadcast_interval_secs": 14400, "neighbors": [ { "node_id": 1771836664, "snr": -14.25 }, { "node_id": 3127536156 } ], "type": "protobuf", "portnum": "NEIGHBORINFO_APP", "message_class": "NeighborInfo" } }, "id": 3664651644, "rx_time": 1775539511, "hop_limit": 3, "priority": "BACKGROUND", "hop_start": 3, "relay_node": 132 } }

Raw Packet Data (36 bytes)

0884d3b2f7091084d3b2f70918c070220b08f8a9f0cc0615000064c12206089cd4a9d30b

Hex Analysis:

Size:	36 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 #769532 Success

Packet Information

Payload Data

Decoded Data:

Neighbor Information Report

2

Neighbor Details