Packet #213931

Database ID:	213931
Mesh Packet ID:	`0x81c7c0f2` Used for correlation across gateways
Timestamp:	2026-04-15 09:15:54 UTC
From Node:	TJ-M-CL-868 (TM)
To Node:	TJN8 (TJC8)
Success:	Processed
Protocol:	ROUTING_APP Port: 5

Gateway:	TJ-M-CL-868 (TM)
Channel:	LongFast
RSSI:	Unknown
SNR:	Unknown
Hop Info:	0/0 hops Start: 0, Limit: 0
Relay Node:	`20` RA02 , TM Last byte of the last hop that relayed this packet - Candidate source node(s) based on 0-hop direct receptions

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:	2 bytes
Gateway:	!6a8aef20
Channel:	LongFast
Payload Type:	ROUTING_APP
Hop Count:	0 / 0

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`	`!6a8aef20` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (2 bytes) Contains the actual mesh network packet

MeshPacket Fields

Canonical MeshPacket view reconstructed from stored protobuf bytes.

Field	Value	Type
`from`	`1787490080` Source node ID	uint32
`to`	`823196948` Target node ID	uint32
`decoded.portnum`	`ROUTING_APP` ROUTING_APP	enum
`decoded.payload_length`	`2` bytes	size
`hop_limit`	Not set	uint32
`hop_start`	Not set	uint32
`hops_taken`	`0` Calculated: hop_start - hop_limit	derived
`rx_rssi`	Not set	int32
`rx_snr`	Not set	float
`rx_time`	`1776244554` Receive timestamp	fixed32
`via_mqtt`	False Direct LoRa transmission	bool
`want_ack`	False No ACK requested	bool
`priority`	`ACK` Packet priority level	enum
`delayed`	Not set	enum
`channel`	Not set	uint32
`pki_encrypted`	False Standard encryption	bool
`next_hop`	`20` Next hop node ID	uint32
`relay_node`	`32` 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:	`!6a8aef20`
Zero Hop Policy:	Enabled Direct gateway connection

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	ROUTING_APP
Size:	2 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "error_reason": "NONE", "type": "protobuf", "portnum": "ROUTING_APP", "message_class": "Routing" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "packet": { "from": 1787490080, "to": 823196948, "decoded": { "portnum": "ROUTING_APP", "payload": "GAA=", "request_id": 3118930939 }, "id": 2177351922, "rx_time": 1776244554, "priority": "ACK", "next_hop": 20, "relay_node": 32 }, "channel_id": "LongFast", "gateway_id": "!6a8aef20" }, "mesh_packet": { "from": 1787490080, "to": 823196948, "decoded": { "portnum": "ROUTING_APP", "payload": "GAA=", "request_id": 3118930939, "parsed_payload": { "error_reason": "NONE", "type": "protobuf", "portnum": "ROUTING_APP", "message_class": "Routing" } }, "id": 2177351922, "rx_time": 1776244554, "priority": "ACK", "next_hop": 20, "relay_node": 32 } }

Raw Packet Data (2 bytes)

1800

Hex Analysis:

Size:	2 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 #213931 Success

Packet Information

Payload Data

Decoded Data: