Packet #1726052

Database ID:	1726052
Mesh Packet ID:	`0xae33326c` Used for correlation across gateways
Timestamp:	2026-04-03 18:49:26 UTC
From Node:	BRC81 V4 GW 🇧🇬 (BRG1)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	BRC81 V4 GW 🇧🇬 (BRG1)
Channel:	Silistra
RSSI:	Unknown
SNR:	Unknown
Hop Info:	0/2 hops Start: 2, Limit: 2
Relay Node:	`90` BRG1 Last byte of the last hop that relayed this packet - Candidate source node(s) based on 0-hop direct receptions

Long Name:	BRC81 V4 GW 🇧🇬
Short Name:	BRG1
Node ID:	!b2a77b90
MAC Address:	gPGyp3uQ
Hardware:	HELTEC_V4

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:	87 bytes
Gateway:	!b2a77b90
Channel:	Silistra
Payload Type:	NODEINFO_APP
Hop Count:	0 / 2

Privacy Summary

Exposure Level:
Broadcast

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

Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers

MQTT ServiceEnvelope Fields

Field	Value
`gateway_id`	`!b2a77b90` Node ID format
`channel_id`	`Silistra`
`packet`	`MeshPacket` (87 bytes) Contains the actual mesh network packet

MeshPacket Fields

Canonical MeshPacket view reconstructed from stored protobuf bytes.

Field	Value	Type
`from`	`2997320592` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`NODEINFO_APP` NODEINFO_APP	enum
`decoded.payload_length`	`87` 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`	Not set	int32
`rx_snr`	Not set	float
`rx_time`	`1775242165` 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`	`41` Channel index	uint32
`pki_encrypted`	False Standard encryption	bool
`next_hop`	Not set	uint32
`relay_node`	`144` 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)
✓ Custom channel: Silistra
✓ 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

MQTT-Specific Fields

Gateway ID:	`!b2a77b90`
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:	87 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!b2a77b90", "long_name": "BRC81 V4 GW 🇧🇬", "short_name": "BRG1", "macaddr": "gPGyp3uQ", "hw_model": "HELTEC_V4" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "packet": { "from": 2997320592, "to": 4294967295, "channel": 41, "decoded": { "portnum": "NODEINFO_APP", "payload": "CgkhYjJhNzdiOTASFEJSQzgxIFY0IEdXIPCfh6fwn4esGgRCUkcxIgaA8bKne5AobjgMQiDA567kc4jGYaIeHGriCJMNdL1F6L/Mj8hUQ9n8E68NS0gB", "bitfield": 1 }, "id": 2922590828, "rx_time": 1775242165, "hop_limit": 2, "priority": "BACKGROUND", "hop_start": 2, "relay_node": 144 }, "channel_id": "Silistra", "gateway_id": "!b2a77b90" }, "mesh_packet": { "from": 2997320592, "to": 4294967295, "channel": 41, "decoded": { "portnum": "NODEINFO_APP", "payload": "CgkhYjJhNzdiOTASFEJSQzgxIFY0IEdXIPCfh6fwn4esGgRCUkcxIgaA8bKne5AobjgMQiDA567kc4jGYaIeHGriCJMNdL1F6L/Mj8hUQ9n8E68NS0gB", "bitfield": 1, "parsed_payload": { "id": "!b2a77b90", "long_name": "BRC81 V4 GW 🇧🇬", "short_name": "BRG1", "macaddr": "gPGyp3uQ", "hw_model": "HELTEC_V4", "role": "CLIENT_BASE", "public_key": "wOeu5HOIxmGiHhxq4giTDXS9Rei/zI/IVEPZ/BOvDUs=", "is_unmessagable": true, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } }, "id": 2922590828, "rx_time": 1775242165, "hop_limit": 2, "priority": "BACKGROUND", "hop_start": 2, "relay_node": 144 } }

Raw Packet Data (87 bytes)

0a092162326137376239301214425243383120563420475720f09f87a7f09f87ac1a0442524731220680f1b2a77b90286e380c4220c0e7aee47388c661a21e1c6ae208930d74bd45e8bfcc8fc85443d9fc13af0d4b4801

Hex Analysis:

Size:	87 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 #1726052 Success

Packet Information

Payload Data

Decoded Data: