Packet #19807116

Database ID:	19807116
Mesh Packet ID:	`0xee418aba` Used for correlation across gateways
Timestamp:	2026-07-23 07:01:27 UTC
From Node:	xDream433 e3ac (e3ac)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	NEIGHBORINFO_APP Port: 71

Gateway:	Kedr GW4 1W (KEDR)
Channel:	LongFast
RSSI:	-100 dBm
SNR:	0.25 dBm
Hop Info:	7/7 hops Start: 7, Limit: 0

Reporting Node:	xDream433 e3ac (e3ac)
Last Sent By:	Kedr GW4 1W (KEDR)
Broadcast Interval:	21600 seconds
Neighbors Found:	4

Neighbor Node	SNR	Last Heard	Broadcast Interval	Signal Quality
xDream433 dd10 (dd10)	0.0 dB	Unknown	Unknown	Good
Apollo_Baumanka_433 (ApB4)	-3.2 dB	Unknown	Unknown	Fair
xDream Triada 4494 (4494)	0.0 dB	Unknown	Unknown	Good
xDream SolarBase 7d6c (7d6c)	0.0 dB	Unknown	Unknown	Good

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:	53 bytes
Gateway:	!3351323c
Channel:	LongFast
Payload Type:	NEIGHBORINFO_APP
Hop Count:	7 / 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`	`!3351323c` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (53 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`3806454700` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`71` NEIGHBORINFO_APP	enum
`decoded.payload_length`	`53` bytes	size
`hop_limit`	Not set	uint32
`hop_start`	`7` Initial hop limit	uint32
`hops_taken`	`7` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-100.0` dBm Signal strength at gateway	int32
`rx_snr`	`0.25` dB Signal quality at gateway	float
`rx_time`	`1784779286` 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`	`12` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1784779287.2177062` 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 (7 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!3351323c`
Signal Metrics:	RSSI: -100.0 dBm SNR: 0.25 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NEIGHBORINFO_APP
Size:	53 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "node_id": 3806454700, "last_sent_by_id": 860959292, "node_broadcast_interval_secs": 21600, "neighbors": [ { "node_id": 3806453008, "snr": 0.0, "last_rx_time": null, "node_broadcast_interval_secs": null, "last_rx_time_str": "Unknown", "node_name": "xDream433 dd10 (dd10)" }, { "node_id": 2193906592, "snr": -3.25, "last_rx_time": null, "node_broadcast_interval_secs": null, "last_rx_time_str": "Unknown", "node_name": "Apollo_Baumanka_433 (ApB4)" }, { "node_id": 4133635220, "snr": 0.0, "last_rx_time": null, "node_broadcast_interval_secs": null, "last_rx_time_str": "Unknown", "node_name": "xDream Triada 4494 (4494)" }, { "node_id": 463699308, "snr": 0.0, "last_rx_time": null, "node_broadcast_interval_secs": null, "last_rx_time_str": "Unknown", "node_name": "xDream SolarBase 7d6c (7d6c)" } ], "neighbor_count": 4, "node_name": "xDream433 e3ac (e3ac)", "last_sent_by_name": "Kedr GW4 1W (KEDR)" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!3351323c", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3806454700, "to": 4294967295, "id": 3997272762, "rx_time": 1784779286, "rx_snr": 0.25, "rx_rssi": -100, "hop_limit": 0, "hop_start": 7, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 12, "tx_after": 0, "decoded": { "portnum": 71, "payload": "08acc787970e10bce4c49a0318e0a80122060890ba87970e220b08a0b791960815000050c0220608948989b30f220608ecfa8ddd01", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "node_id": 3806454700, "last_sent_by_id": 860959292, "node_broadcast_interval_secs": 21600, "neighbors": [ { "node_id": 3806453008 }, { "node_id": 2193906592, "snr": -3.25 }, { "node_id": 4133635220 }, { "node_id": 463699308 } ], "type": "protobuf", "portnum": "NEIGHBORINFO_APP", "message_class": "NeighborInfo" } } } }

Raw Packet Data (53 bytes)

08acc787970e10bce4c49a0318e0a80122060890ba87970e220b08a0b791960815000050c0220608948989b30f220608ecfa8ddd01

Hex Analysis:

Size:	53 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 #19807116 Success

Packet Information

Payload Data

Decoded Data:

Neighbor Information Report

4

Neighbor Details