Packet #2255804

Database ID:	2255804
Mesh Packet ID:	`0xc2943e1d` Used for correlation across gateways
Timestamp:	2026-03-06 19:47:22 UTC
From Node:	mobile sof (fd50)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	TELEMETRY_APP Port: 67

Gateway:	gw mir (6ed8)
Channel:	Bulgaria
RSSI:	-42 dBm
SNR:	12.0 dBm
Hop Info:	0/2 hops Start: 2, Limit: 2
Relay Node:	`50` fd50 Last byte of the last hop that relayed this packet - Candidate source node(s) based on 0-hop direct receptions

Temperature:	15.6°C
Humidity:	42.4%
Pressure:	1011.2 hPa

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:	22 bytes
Gateway:	!db2f6ed8
Channel:	Bulgaria
Payload Type:	TELEMETRY_APP
Hop Count:	Unknown / 2

Privacy Summary

Exposure Level:
Broadcast

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Custom channel: Bulgaria
+ 2 more...

Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
+ 1 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!db2f6ed8` Node ID format
`channel_id`	`Bulgaria`
`packet`	`MeshPacket` (22 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`3127311696` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`67` TELEMETRY_APP	enum
`decoded.payload_length`	`22` bytes	size
`hop_limit`	`2` Remaining hops allowed	uint32
`hop_start`	`2` Initial hop limit	uint32
`hops_taken`	`0` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-42.0` dBm Signal strength at gateway	int32
`rx_snr`	`12.00` dB Signal quality at gateway	float
`rx_time`	`1772826441` Receive timestamp	fixed32
`via_mqtt`	False Direct LoRa transmission	bool
`want_ack`	False No ACK requested	bool
`priority`	Not set	enum
`delayed`	Not set	enum
`channel`	Not set	uint32
`pki_encrypted`	False Standard encryption	bool
`next_hop`	Not set	uint32
`relay_node`	`80` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1772826442.8932345` Unix timestamp	uint32

MQTT Privacy & Exposure Analysis

Analysis of privacy features and exposure risks when packet is shared via MQTT

Exposure Level: Broadcast

Privacy Features:

✓ Direct LoRa transmission (not via MQTT)
✓ Custom channel: Bulgaria
✓ Gateway node ID tracked
✓ Zero-hop: direct from source to MQTT gateway

Exposure Risks:

⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!db2f6ed8`
Zero Hop Policy:	Enabled Direct gateway connection
Signal Metrics:	RSSI: -42.0 dBm SNR: 12.00 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	TELEMETRY_APP
Size:	22 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "time": 1772826441, "environment_metrics": { "temperature": 15.56, "relative_humidity": 42.367188, "barometric_pressure": 1011.24005 } }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!db2f6ed8", "channel_id": "Bulgaria", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3127311696, "to": 4294967295, "id": 3264495133, "rx_time": 1772826441, "rx_snr": 12.0, "rx_rssi": -42, "hop_limit": 2, "hop_start": 2, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 80, "tx_after": 0, "decoded": { "portnum": 67, "payload": "0d492fab691a0f0dc3f5784115007829421d5dcf7c44", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "time": 1772826441, "environment_metrics": { "temperature": 15.56, "relative_humidity": 42.367188, "barometric_pressure": 1011.24005 }, "type": "protobuf", "portnum": "TELEMETRY_APP", "message_class": "Telemetry" } } } }

Raw Packet Data (22 bytes)

0d492fab691a0f0dc3f5784115007829421d5dcf7c44

Hex Analysis:

Size:	22 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 #2255804 Success

Packet Information

Payload Data

Decoded Data:

Environment Metrics: