Packet #1220061

Database ID:	1220061
Mesh Packet ID:	`0xa715afdb` Used for correlation across gateways
Timestamp:	2026-06-23 15:57:32 UTC
From Node:	Farense⚽-C-8🇵🇹 (⚽)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	NEIGHBORINFO_APP Port: 71

Gateway:	Ilheu-dos-🥥-GT-8🇵🇹 (ICGT)
Channel:	SFNarrow
RSSI:	-48 dBm
SNR:	11.75 dBm
Hop Info:	0/4 hops Start: 4, Limit: 4
Relay Node:	`a8` ⚽ Last byte of the last hop that relayed this packet - Candidate source node(s) based on 0-hop direct receptions

Reporting Node:	Farense⚽-C-8🇵🇹 (⚽)
Last Sent By:	Farense⚽-C-8🇵🇹 (⚽)
Broadcast Interval:	14400 seconds
Neighbors Found:	1

Neighbor Node	SNR	Last Heard	Broadcast Interval	Signal Quality
Ilheu-dos-🥥-GT-8🇵🇹 (ICGT)	11.8 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:	28 bytes
Gateway:	!46849527
Channel:	SFNarrow
Payload Type:	NEIGHBORINFO_APP
Hop Count:	0 / 4

Privacy Summary

Exposure Level:
Broadcast

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

Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
+ 1 more...

MQTT ServiceEnvelope Fields

Field	Value
`gateway_id`	`!46849527` Node ID format
`channel_id`	`SFNarrow`
`packet`	`MeshPacket` (28 bytes) Contains the actual mesh network packet

MeshPacket Fields

Canonical MeshPacket view reconstructed from stored protobuf bytes.

Field	Value	Type
`from`	`1770338984` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`NEIGHBORINFO_APP` NEIGHBORINFO_APP	enum
`decoded.payload_length`	`28` bytes	size
`hop_limit`	`4` Remaining hops allowed	uint32
`hop_start`	`4` Initial hop limit	uint32
`hops_taken`	`0` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-48.0` dBm Signal strength at gateway	int32
`rx_snr`	`11.75` dB Signal quality at gateway	float
`rx_time`	`1782230250` 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`	`32` Channel index	uint32
`pki_encrypted`	False Standard encryption	bool
`next_hop`	Not set	uint32
`relay_node`	`168` 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: SFNarrow
✓ 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
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!46849527`
Zero Hop Policy:	Enabled Direct gateway connection
Signal Metrics:	RSSI: -48.0 dBm SNR: 11.75 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NEIGHBORINFO_APP
Size:	28 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "node_id": 1770338984, "last_sent_by_id": 1770338984, "node_broadcast_interval_secs": 14400, "neighbors": [ { "node_id": 1183094055, "snr": 11.75, "last_rx_time": null, "node_broadcast_interval_secs": null, "last_rx_time_str": "Unknown", "node_name": "Ilheu-dos-🥥-GT-8🇵🇹 (ICGT)" } ], "neighbor_count": 1, "node_name": "Farense⚽-C-8🇵🇹 (⚽)", "last_sent_by_name": "Farense⚽-C-8🇵🇹 (⚽)" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "packet": { "from": 1770338984, "to": 4294967295, "channel": 32, "decoded": { "portnum": "NEIGHBORINFO_APP", "payload": "CKj1lMwGEKj1lMwGGMBwIgsIp6qStAQVAAA8QQ==", "bitfield": 1 }, "id": 2803216347, "rx_time": 1782230250, "rx_snr": 11.75, "hop_limit": 4, "rx_rssi": -48, "hop_start": 4, "relay_node": 168, "transport_mechanism": "TRANSPORT_LORA" }, "channel_id": "SFNarrow", "gateway_id": "!46849527" }, "mesh_packet": { "from": 1770338984, "to": 4294967295, "channel": 32, "decoded": { "portnum": "NEIGHBORINFO_APP", "payload": "CKj1lMwGEKj1lMwGGMBwIgsIp6qStAQVAAA8QQ==", "bitfield": 1, "parsed_payload": { "node_id": 1770338984, "last_sent_by_id": 1770338984, "node_broadcast_interval_secs": 14400, "neighbors": [ { "node_id": 1183094055, "snr": 11.75 } ], "type": "protobuf", "portnum": "NEIGHBORINFO_APP", "message_class": "NeighborInfo" } }, "id": 2803216347, "rx_time": 1782230250, "rx_snr": 11.75, "hop_limit": 4, "rx_rssi": -48, "hop_start": 4, "relay_node": 168, "transport_mechanism": "TRANSPORT_LORA" } }

Raw Packet Data (28 bytes)

08a8f594cc0610a8f594cc0618c070220b08a7aa92b4041500003c41

Hex Analysis:

Size:	28 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 #1220061 Success

Packet Information

Payload Data

Decoded Data:

Neighbor Information Report

1

Neighbor Details