Packet #119281

Packet Information

Database ID:	119281
Mesh Packet ID:	`0x9d8dc225` Used for correlation across gateways
Timestamp:	2026-04-19 18:28:28 Саратов/Балаково (UTC+4)
From Node:	Meshtastic 6df5 (6df5)
To Node:	!f66b7b18 (7b18)
Success:	Processed
Protocol:	TRACEROUTE_APP Port: 70

Gateway:	chem (721c)
Channel:	LongFast
RSSI:	-101 dBm
SNR:	4.25 dBm
Hop Info:	3/3 hops Start: 3, Limit: 0

Payload Data

Protocol: TRACEROUTE_APP

Size: 60 bytes

Decoded: Yes

Decoded Data:

Route Information

Route Path:	Головановский (GLV)
Hop Count:	0 hops
Status:	Forward incomplete, Return in progress
SNR Towards:	-10.75 dB -6.5 dB
Return Path:	4g obluchatel (4g+) → Eye of Sauron (sau)
SNR Back:	-7.0 dB -16.25 dB

Traceroute Steps

Hop	From Node	To Node	Distance	SNR (dB)	Direction	Analysis
1	!f66b7b18	Головановский (GLV)	Unknown	-10.75 dB	Origin	Hops
2	Головановский (GLV)	Meshtastic 6df5 (6df5)	21.88 km	-6.5 dB	Relay	Hops
Traceroute incomplete - Final destination not reached

Return Path Steps

Hop	From Node	To Node	Distance	SNR (dB)	Direction	Analysis
1	Meshtastic 6df5 (6df5)	4g obluchatel (4g+)	1.36 km	-7.0 dB	Return Start	Hops
2	4g obluchatel (4g+)	Eye of Sauron (sau)	1.88 km	-16.25 dB	Return End	Hops

Total Forward Distance

21.88 km

Total Return Distance

3.24 km

Combined Traceroute Graph

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Legend & Paths

Nodes

🔄 Router Node

📡 Gateway Node

🚀 Source Node

🎯 Target Node

Connections

RF Link

Gateway Connection

Direct Reception (0 hops)

Packet Paths

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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:	60 bytes
Gateway:	!9e78721c
Channel:	LongFast
Payload Type:	TRACEROUTE_APP
Hop Count:	3 / 3

Privacy Summary

Exposure Level:
Direct Message

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Acknowledgment requested
+ 2 more...

Exposure Risks:
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
+ 2 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!9e78721c` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (60 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`2256956917` Source node ID	uint32
`to`	`4134239000` Target node ID	uint32
`decoded.portnum`	`70` TRACEROUTE_APP	enum
`decoded.payload_length`	`60` bytes	size
`hop_limit`	Not set	uint32
`hop_start`	`3` Initial hop limit	uint32
`hops_taken`	`3` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-101.0` dBm Signal strength at gateway	int32
`rx_snr`	`4.25` dB Signal quality at gateway	float
`rx_time`	`1776608907` Receive timestamp	fixed32
`via_mqtt`	False Direct LoRa transmission	bool
`want_ack`	True Acknowledgment requested	bool
`priority`	Not set	enum
`delayed`	Not set	enum
`channel`	`2` Channel index	uint32
`pki_encrypted`	False Standard encryption	bool
`next_hop`	Not set	uint32
`relay_node`	`248` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`2026-04-19 17:28:28.526169+03:00` Unix timestamp	uint32

MQTT Privacy & Exposure Analysis

Analysis of privacy features and exposure risks when packet is shared via MQTT

Exposure Level: Direct Message

Privacy Features:

✓ Direct LoRa transmission (not via MQTT)
✓ Acknowledgment requested
✓ Targeted to specific node
✓ Gateway node ID tracked

Exposure Risks:

⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (3 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Want ack:	`True`
Gateway ID:	`!9e78721c`
Signal Metrics:	RSSI: -101.0 dBm SNR: 4.25 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	TRACEROUTE_APP
Size:	60 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "error": "Serialization failed: Object of type datetime is not JSON serializable" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!9e78721c", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2256956917, "to": 4134239000, "id": 2643313189, "rx_time": 1776608907, "rx_snr": 4.25, "rx_rssi": -101, "hop_limit": 0, "hop_start": 3, "via_mqtt": false, "want_ack": true, "priority": 0, "delayed": 0, "channel_index": 2, "pki_encrypted": false, "next_hop": 0, "relay_node": 248, "tx_after": 0, "decoded": { "portnum": 70, "payload": "0a04d0eeb17d1214d5ffffffffffffffff01e6ffffffffffffffff011a0818538569f8ac789e2214e4ffffffffffffffff01bfffffffffffffffff01", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "route": [ 2108813008 ], "snr_towards": [ -43, -26 ], "route_back": [ 1770345240, 2658708728 ], "snr_back": [ -28, -65 ], "type": "protobuf", "portnum": "TRACEROUTE_APP", "message_class": "RouteDiscovery" } } } }

Raw Packet Data (60 bytes)

0a04d0eeb17d1214d5ffffffffffffffff01e6ffffffffffffffff011a0818538569f8ac789e2214e4ffffffffffffffff01bfffffffffffffffff01

Hex Analysis:

Size:	60 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 #119281 Success