Packet #102732

Packet Information

Database ID:	102732
Mesh Packet ID:	`0x36896f8f` Used for correlation across gateways
Timestamp:	2026-04-07 01:30:54 Саратов/Балаково (UTC+4)
From Node:	!d9139e78 (9e78)
To Node:	📡 sarmesh.zulipchat.com (O1v4)
Success:	Processed
Protocol:	TRACEROUTE_APP Port: 70

Gateway:	chem (721c)
Channel:	LongFast
RSSI:	-99 dBm
SNR:	-1.0 dBm
Hop Info:	7/7 hops Start: 7, Limit: 0

Payload Data

Protocol: TRACEROUTE_APP

Size: 74 bytes

Decoded: Yes

Decoded Data:

Route Information

Route Path:	!452f3561 → !699b3bf4 → BAZALT 📻 (777) → !0400b134 → Eye of Sauron (sau)
Hop Count:	4 hops
Status:	Incomplete - Final destination not reached
SNR Towards:	-12.0 dB -14.75 dB -10.25 dB -4.0 dB -16.25 dB

Route Visualization

Loading route map...

Map shows the geographic path if nodes have shared location data.

Traceroute Steps

Hop	From Node	To Node	Distance	SNR (dB)	Direction	Analysis
1	!d9139e78	!452f3561	Unknown	-12.0 dB	Origin	Hops
2	!452f3561	!699b3bf4	Unknown	-14.75 dB	Relay	Hops
3	!699b3bf4	BAZALT 📻 (777)	Unknown	-10.25 dB	Relay	Hops
4	BAZALT 📻 (777)	!0400b134	Unknown	-4.0 dB	Relay	Hops
5	!0400b134	Eye of Sauron (sau)	Unknown	-16.25 dB	Relay	Hops
Traceroute incomplete - Final destination not reached

Combined Traceroute Graph

Controls: Drag nodes to rearrange • Mouse wheel to zoom • Click and drag background to pan • Hover for details

Building graph...

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:	74 bytes
Gateway:	!9e78721c
Channel:	LongFast
Payload Type:	TRACEROUTE_APP
Hop Count:	7 / 7

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` (74 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`3641941624` Source node ID	uint32
`to`	`1770301532` Target node ID	uint32
`decoded.portnum`	`70` TRACEROUTE_APP	enum
`decoded.payload_length`	`74` 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`	`-99.0` dBm Signal strength at gateway	int32
`rx_snr`	`-1.00` dB Signal quality at gateway	float
`rx_time`	`1775511054` 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`	`2026-04-07 00:30:54.896280+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 (7 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Want ack:	`True`
Gateway ID:	`!9e78721c`
Signal Metrics:	RSSI: -99.0 dBm SNR: -1.00 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	TRACEROUTE_APP
Size:	74 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": 3641941624, "to": 1770301532, "id": 914976655, "rx_time": 1775511054, "rx_snr": -1.0, "rx_rssi": -99, "hop_limit": 0, "hop_start": 7, "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": "0a1461352f45f43b9b69eceae50234b10004f8ac789e1232d0ffffffffffffffff01c5ffffffffffffffff01d7ffffffffffffffff01f0ffffffffffffffff01bfffffffffffffffff01", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "route": [ 1160721761, 1771781108, 48622316, 67154228, 2658708728 ], "snr_towards": [ -48, -59, -41, -16, -65 ], "type": "protobuf", "portnum": "TRACEROUTE_APP", "message_class": "RouteDiscovery" } } } }

Raw Packet Data (74 bytes)

0a1461352f45f43b9b69eceae50234b10004f8ac789e1232d0ffffffffffffffff01c5ffffffffffffffff01d7ffffffffffffffff01f0ffffffffffffffff01bfffffffffffffffff01

Hex Analysis:

Size:	74 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 #102732 Success