Packet #769466

Database ID:	769466
Mesh Packet ID:	`0x120df17a` Used for correlation across gateways
Timestamp:	2026-04-07 04:47:25 UTC
From Node:	Meshtastic a984 (a984)
To Node:	Meshtastic d788 (d788)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

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

Long Name:	Meshtastic a984
Short Name:	a984
Node ID:	!9eeca984
MAC Address:	nBOe7KmE
Hardware:	HELTEC_V3

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:	!9eeca984
Channel:	LongFast
Payload Type:	NODEINFO_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` (80 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`	`3758937992` Target node ID	uint32
`decoded.portnum`	`NODEINFO_APP` NODEINFO_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`	`1775537245` 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:	NODEINFO_APP
Size:	80 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!9eeca984", "long_name": "Meshtastic a984", "short_name": "a984", "macaddr": "nBOe7KmE", "hw_model": "HELTEC_V3" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "packet": { "from": 2666310020, "to": 3758937992, "channel": 8, "decoded": { "portnum": "NODEINFO_APP", "payload": "CgkhOWVlY2E5ODQSD01lc2h0YXN0aWMgYTk4NBoEYTk4NCIGnBOe7KmEKCtCIIBKHRtd8VJEEMyp44PH40tfZUkmj6rd8+f+aQ+TAzd9SAA=", "want_response": true, "bitfield": 3 }, "id": 302903674, "rx_time": 1775537245, "hop_limit": 3, "priority": "BACKGROUND", "hop_start": 3, "relay_node": 132 }, "channel_id": "LongFast", "gateway_id": "!9eeca984" }, "mesh_packet": { "from": 2666310020, "to": 3758937992, "channel": 8, "decoded": { "portnum": "NODEINFO_APP", "payload": "CgkhOWVlY2E5ODQSD01lc2h0YXN0aWMgYTk4NBoEYTk4NCIGnBOe7KmEKCtCIIBKHRtd8VJEEMyp44PH40tfZUkmj6rd8+f+aQ+TAzd9SAA=", "want_response": true, "bitfield": 3, "parsed_payload": { "id": "!9eeca984", "long_name": "Meshtastic a984", "short_name": "a984", "macaddr": "nBOe7KmE", "hw_model": "HELTEC_V3", "public_key": "gEodG13xUkQQzKnjg8fjS19lSSaPqt3z5/5pD5MDN30=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } }, "id": 302903674, "rx_time": 1775537245, "hop_limit": 3, "priority": "BACKGROUND", "hop_start": 3, "relay_node": 132 } }

Raw Packet Data (80 bytes)

0a09213965656361393834120f4d65736874617374696320613938341a046139383422069c139eeca984282b4220804a1d1b5df1524410cca9e383c7e34b5f6549268faaddf3e7fe690f9303377d4800

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 #769466 Success

Packet Information

Payload Data

Decoded Data: