Packet #2536941

Database ID:	2536941
Mesh Packet ID:	`0xec0916d8` Used for correlation across gateways
Timestamp:	2026-09-28 00:27:10 UTC
From Node:	IberianTracks3-8 (IBR3)
To Node:	CT2JCI-1-8 (APL1)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	IberianTracks3-8 (IBR3)
Channel:	LongFast
RSSI:	Unknown
SNR:	Unknown
Hop Info:	0/5 hops Start: 5, Limit: 5
Relay Node:	`51` IBR3 Last byte of the last hop that relayed this packet - Candidate source node(s) based on 0-hop direct receptions

Long Name:	IberianTracks3-8
Short Name:	IBR3
Node ID:	!c6710b51
MAC Address:	783GcQtR
Hardware:	NRF52_PROMICRO_DIY

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:	82 bytes
Gateway:	!c6710b51
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	0 / 5

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`	`!c6710b51` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (82 bytes) Contains the actual mesh network packet

MeshPacket Fields

Canonical MeshPacket view reconstructed from stored protobuf bytes.

Field	Value	Type
`from`	`3329297233` Source node ID	uint32
`to`	`2874995204` Target node ID	uint32
`decoded.portnum`	`NODEINFO_APP` NODEINFO_APP	enum
`decoded.payload_length`	`82` bytes	size
`hop_limit`	`5` Remaining hops allowed	uint32
`hop_start`	`5` 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`	`1790555228` 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`	`81` 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:	`!c6710b51`
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:	82 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!c6710b51", "long_name": "IberianTracks3-8 ", "short_name": "IBR3", "macaddr": "783GcQtR", "hw_model": "NRF52_PROMICRO_DIY" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "packet": { "from": 3329297233, "to": 2874995204, "channel": 8, "decoded": { "portnum": "NODEINFO_APP", "payload": "CgkhYzY3MTBiNTESEUliZXJpYW5UcmFja3MzLTggGgRJQlIzIgbvzcZxC1EoP0Ig4Xc0ril84bxXgFSeRvfia6qZu9M02BEUKsHWvMRPJkxIAA==", "want_response": true, "bitfield": 3 }, "id": 3960018648, "rx_time": 1790555228, "hop_limit": 5, "priority": "BACKGROUND", "hop_start": 5, "relay_node": 81 }, "channel_id": "LongFast", "gateway_id": "!c6710b51" }, "mesh_packet": { "from": 3329297233, "to": 2874995204, "channel": 8, "decoded": { "portnum": "NODEINFO_APP", "payload": "CgkhYzY3MTBiNTESEUliZXJpYW5UcmFja3MzLTggGgRJQlIzIgbvzcZxC1EoP0Ig4Xc0ril84bxXgFSeRvfia6qZu9M02BEUKsHWvMRPJkxIAA==", "want_response": true, "bitfield": 3, "parsed_payload": { "id": "!c6710b51", "long_name": "IberianTracks3-8 ", "short_name": "IBR3", "macaddr": "783GcQtR", "hw_model": "NRF52_PROMICRO_DIY", "public_key": "4Xc0ril84bxXgFSeRvfia6qZu9M02BEUKsHWvMRPJkw=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } }, "id": 3960018648, "rx_time": 1790555228, "hop_limit": 5, "priority": "BACKGROUND", "hop_start": 5, "relay_node": 81 } }

Raw Packet Data (82 bytes)

0a0921633637313062353112114962657269616e547261636b73332d38201a04494252332206efcdc6710b51283f4220e17734ae297ce1bc5780549e46f7e26baa99bbd334d811142ac1d6bcc44f264c4800

Hex Analysis:

Size:	82 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 #2536941 Success

Packet Information

Payload Data

Decoded Data: