Packet #1730192

Database ID:	1730192
Mesh Packet ID:	`0x221c81f8` Used for correlation across gateways
Timestamp:	2026-04-04 00:15:37 UTC
From Node:	BRC20 SS GW V3 🇧🇬 (BSS1)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	NEIGHBORINFO_APP Port: 71

Gateway:	BRC20 SS GW V3 🇧🇬 (BSS1)
Channel:	Silistra
RSSI:	Unknown
SNR:	Unknown
Hop Info:	0/2 hops Start: 2, Limit: 2
Relay Node:	`9c` BSS1 Last byte of the last hop that relayed this packet - Candidate source node(s) based on 0-hop direct receptions

Reporting Node:	BRC20 SS GW V3 🇧🇬 (BSS1)
Last Sent By:	BRC20 SS GW V3 🇧🇬 (BSS1)
Broadcast Interval:	14400 seconds
Neighbors Found:	3

Neighbor Node	SNR	Last Heard	Broadcast Interval	Signal Quality
BRC16 TL1 🇧🇬📡 (BRN1)	8.8 dB	Unknown	Unknown	Excellent
BRC17 Т1КЕ 🇧🇬📡 (BRN2)	3.5 dB	Unknown	Unknown	Good
BRC83 SS R 🇧🇬🌞 (BSS2)	5.2 dB	Unknown	Unknown	Excellent

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:	54 bytes
Gateway:	!9e9d809c
Channel:	Silistra
Payload Type:	NEIGHBORINFO_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`	`!9e9d809c` Node ID format
`channel_id`	`Silistra`
`packet`	`MeshPacket` (54 bytes) Contains the actual mesh network packet

MeshPacket Fields

Canonical MeshPacket view reconstructed from stored protobuf bytes.

Field	Value	Type
`from`	`2661122204` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`NEIGHBORINFO_APP` NEIGHBORINFO_APP	enum
`decoded.payload_length`	`54` 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`	`1775261736` 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`	`156` 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:	`!9e9d809c`
Zero Hop Policy:	Enabled Direct gateway connection

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NEIGHBORINFO_APP
Size:	54 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "node_id": 2661122204, "last_sent_by_id": 2661122204, "node_broadcast_interval_secs": 14400, "neighbors": [ { "node_id": 3572716438, "snr": 8.75, "last_rx_time": null, "node_broadcast_interval_secs": null, "last_rx_time_str": "Unknown", "node_name": "BRC16 TL1 🇧🇬📡 (BRN1)" }, { "node_id": 2718312138, "snr": 3.5, "last_rx_time": null, "node_broadcast_interval_secs": null, "last_rx_time_str": "Unknown", "node_name": "BRC17 Т1КЕ 🇧🇬📡 (BRN2)" }, { "node_id": 3295667951, "snr": 5.25, "last_rx_time": null, "node_broadcast_interval_secs": null, "last_rx_time_str": "Unknown", "node_name": "BRC83 SS R 🇧🇬🌞 (BSS2)" } ], "neighbor_count": 3, "node_name": "BRC20 SS GW V3 🇧🇬 (BSS1)", "last_sent_by_name": "BRC20 SS GW V3 🇧🇬 (BSS1)" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "packet": { "from": 2661122204, "to": 4294967295, "channel": 41, "decoded": { "portnum": "NEIGHBORINFO_APP", "payload": "CJyB9vQJEJyB9vQJGMBwIgsIlqfNpw0VAAAMQSILCMrNmJAKFQAAYEAiCwjvzb+jDBUAAKhA", "bitfield": 1 }, "id": 572293624, "rx_time": 1775261736, "hop_limit": 2, "priority": "BACKGROUND", "hop_start": 2, "relay_node": 156 }, "channel_id": "Silistra", "gateway_id": "!9e9d809c" }, "mesh_packet": { "from": 2661122204, "to": 4294967295, "channel": 41, "decoded": { "portnum": "NEIGHBORINFO_APP", "payload": "CJyB9vQJEJyB9vQJGMBwIgsIlqfNpw0VAAAMQSILCMrNmJAKFQAAYEAiCwjvzb+jDBUAAKhA", "bitfield": 1, "parsed_payload": { "node_id": 2661122204, "last_sent_by_id": 2661122204, "node_broadcast_interval_secs": 14400, "neighbors": [ { "node_id": 3572716438, "snr": 8.75 }, { "node_id": 2718312138, "snr": 3.5 }, { "node_id": 3295667951, "snr": 5.25 } ], "type": "protobuf", "portnum": "NEIGHBORINFO_APP", "message_class": "NeighborInfo" } }, "id": 572293624, "rx_time": 1775261736, "hop_limit": 2, "priority": "BACKGROUND", "hop_start": 2, "relay_node": 156 } }

Raw Packet Data (54 bytes)

089c81f6f409109c81f6f40918c070220b0896a7cda70d1500000c41220b08cacd98900a1500006040220b08efcdbfa30c150000a840

Hex Analysis:

Size:	54 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 #1730192 Success

Packet Information

Payload Data

Decoded Data:

Neighbor Information Report

3

Neighbor Details