Packet #1531346

Database ID:	1531346
Mesh Packet ID:	`0x2bf520d7` Used for correlation across gateways
Timestamp:	2026-05-30 23:22:19 UTC
From Node:	LoCoMT-MtP1 (🏢)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	Deka Mobile (DM)
Channel:	LongFast
RSSI:	-112 dBm
SNR:	-19.25 dBm
Hop Info:	1/7 hops Start: 7, Limit: 6
Relay Node:	`89` Last byte of the last hop that relayed this packet

Long Name:	LoCoMT-MtP1
Short Name:	🏢
Node ID:	!fb5105a5
MAC Address:	1Qb7UQWl
Hardware:	RAK4631

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:	78 bytes
Gateway:	!8c27a75e
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	1 / 7

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

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!8c27a75e` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (78 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`4216391077` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`78` bytes	size
`hop_limit`	`6` Remaining hops allowed	uint32
`hop_start`	`7` Initial hop limit	uint32
`hops_taken`	`1` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-112.0` dBm Signal strength at gateway	int32
`rx_snr`	`-19.25` dB Signal quality at gateway	float
`rx_time`	`1780183344` 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`	`137` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1780183339.9747748` 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)
✓ 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 (1 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!8c27a75e`
Signal Metrics:	RSSI: -112.0 dBm SNR: -19.25 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	78 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!fb5105a5", "long_name": "LoCoMT-MtP1", "short_name": "🏢", "macaddr": "1Qb7UQWl", "hw_model": "RAK4631" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!8c27a75e", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 4216391077, "to": 4294967295, "id": 737485015, "rx_time": 1780183344, "rx_snr": -19.25, "rx_rssi": -112, "hop_limit": 6, "hop_start": 7, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 137, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09216662353130356135120b4c6f436f4d542d4d7450311a04f09f8fa22206d506fb5105a52809380242208acbbacba2d807f02d794bb538f003a71cc06bbbc17c80de2d195cf64baec3514801", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!fb5105a5", "long_name": "LoCoMT-MtP1", "short_name": "🏢", "macaddr": "1Qb7UQWl", "hw_model": "RAK4631", "role": "ROUTER", "public_key": "isu6y6LYB/AteUu1OPADpxzAa7vBfIDeLRlc9kuuw1E=", "is_unmessagable": true, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (78 bytes)

0a09216662353130356135120b4c6f436f4d542d4d7450311a04f09f8fa22206d506fb5105a52809380242208acbbacba2d807f02d794bb538f003a71cc06bbbc17c80de2d195cf64baec3514801

Hex Analysis:

Size:	78 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 #1531346 Success

Packet Information

Payload Data

Decoded Data: