Packet #3105796

Database ID:	3105796
Mesh Packet ID:	`0x496b5a63` Used for correlation across gateways
Timestamp:	2026-04-03 10:29:49 UTC
From Node:	Meshtastic 16e6 (16e6)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	TELEMETRY_APP Port: 67

Gateway:	AvantGuard (avg1)
Channel:	LongFast
RSSI:	-117 dBm
SNR:	-17.0 dBm
Hop Info:	4/4 hops Start: 4, Limit: 0
Relay Node:	`d4` Last byte of the last hop that relayed this packet

Temperature:	27.2°C

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:	17 bytes
Gateway:	!1f48b02a
Channel:	LongFast
Payload Type:	TELEMETRY_APP
Hop Count:	4 / 4

Privacy Summary

Exposure Level:
Broadcast

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Gateway node ID tracked

Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
+ 3 more...

MQTT ServiceEnvelope Fields

Field	Value
`gateway_id`	`!1f48b02a` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (17 bytes) Contains the actual mesh network packet

MeshPacket Fields

Canonical MeshPacket view reconstructed from stored protobuf bytes.

Field	Value	Type
`from`	`4216133350` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`TELEMETRY_APP` TELEMETRY_APP	enum
`decoded.payload_length`	`17` bytes	size
`hop_limit`	Not set	uint32
`hop_start`	`4` Initial hop limit	uint32
`hops_taken`	`4` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-117.0` dBm Signal strength at gateway	int32
`rx_snr`	`-17.00` dB Signal quality at gateway	float
`rx_time`	`1775212189` 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`	`8` Channel index	uint32
`pki_encrypted`	False Standard encryption	bool
`next_hop`	Not set	uint32
`relay_node`	`212` 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: Broadcast

Privacy Features:

✓ Direct LoRa transmission (not via MQTT)
✓ Gateway node ID tracked

Exposure Risks:

⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (4 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!1f48b02a`
Signal Metrics:	RSSI: -117.0 dBm SNR: -17.00 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	TELEMETRY_APP
Size:	17 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "time": 1775212187, "environment_metrics": { "temperature": 27.245249, "lux": 40.0 } }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "packet": { "from": 4216133350, "to": 4294967295, "channel": 8, "decoded": { "portnum": "TELEMETRY_APP", "payload": "DZuWz2kaCg1F9tlBTQAAIEI=", "bitfield": 1 }, "id": 1231772259, "rx_time": 1775212189, "rx_snr": -17.0, "rx_rssi": -117, "hop_start": 4, "relay_node": 212, "transport_mechanism": "TRANSPORT_LORA" }, "channel_id": "LongFast", "gateway_id": "!1f48b02a" }, "mesh_packet": { "from": 4216133350, "to": 4294967295, "channel": 8, "decoded": { "portnum": "TELEMETRY_APP", "payload": "DZuWz2kaCg1F9tlBTQAAIEI=", "bitfield": 1, "parsed_payload": { "time": 1775212187, "environment_metrics": { "temperature": 27.245249, "lux": 40.0 }, "type": "protobuf", "portnum": "TELEMETRY_APP", "message_class": "Telemetry" } }, "id": 1231772259, "rx_time": 1775212189, "rx_snr": -17.0, "rx_rssi": -117, "hop_start": 4, "relay_node": 212, "transport_mechanism": "TRANSPORT_LORA" } }

Raw Packet Data (17 bytes)

0d9b96cf691a0a0d45f6d9414d00002042

Hex Analysis:

Size:	17 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 #3105796 Success

Packet Information

Payload Data

Decoded Data:

Environment Metrics: