Packet #168137

Database ID:	168137
Mesh Packet ID:	`0x7a658d81` Used for correlation across gateways
Timestamp:	2025-09-09 15:32:34 UTC
From Node:	LZ2ACE - T-echo (ACEL)
To Node:	LZ2ITD tracker (2ITD)
Success:	Processed
Protocol:	TRACEROUTE_APP Port: 70

Gateway:	LZ2ACE - T-echo (ACEL)
Channel:	Bulgaria
RSSI:	Unknown
SNR:	Unknown
Hop Info:	0/2 hops Start: 2, Limit: 2

SNR Towards:	0.0 dB

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:	3 bytes
Gateway:	!a86982ba
Channel:	Bulgaria
Payload Type:	TRACEROUTE_APP
Hop Count:	Unknown / 2

Privacy Summary

Exposure Level:
Direct Message

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Acknowledgment requested
+ 4 more...

Exposure Risks:
⚠ Packet visible to MQTT subscribers

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!a86982ba` Node ID format
`channel_id`	`Bulgaria`
`packet`	`MeshPacket` (3 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`2825487034` Source node ID	uint32
`to`	`3743568515` Target node ID	uint32
`decoded.portnum`	`70` TRACEROUTE_APP	enum
`decoded.payload_length`	`3` 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`	`1757421153` Receive timestamp	fixed32
`via_mqtt`	False Direct LoRa transmission	bool
`want_ack`	True Acknowledgment requested	bool
`priority`	`70` Packet priority level	enum
`delayed`	Not set	enum
`channel`	Not set	uint32
`pki_encrypted`	False Standard encryption	bool
`next_hop`	`36` Next hop node ID	uint32
`relay_node`	`186` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1757421154.4396088` 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
✓ Custom channel: Bulgaria
✓ Gateway node ID tracked
✓ Zero-hop: direct from source to MQTT gateway

Exposure Risks:

⚠ Packet visible to MQTT subscribers

MQTT-Specific Fields

Want ack:	`True`
Gateway ID:	`!a86982ba`
Zero Hop Policy:	Enabled Direct gateway connection

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	TRACEROUTE_APP
Size:	3 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "route_nodes": [], "snr_towards": [ 0.0 ], "route_back": [], "snr_back": [], "route_node_names": { "2825487034": "LZ2ACE - T-echo (ACEL)", "3743568515": "LZ2ITD tracker (2ITD)" }, "traceroute_packet": { "packet_data": { "id": 168137, "timestamp": 1757421154.4396088, "from_node_id": 2825487034, "to_node_id": 3743568515, "portnum": 70, "portnum_name": "TRACEROUTE_APP", "gateway_id": "!a86982ba", "channel_id": "Bulgaria", "mesh_packet_id": 2053475713, "rssi": 0, "snr": 0.0, "hop_limit": 2, "hop_start": 2, "payload_length": 3, "processed_successfully": 1, "raw_payload": "120100", "via_mqtt": 0, "want_ack": 1, "priority": 70, "delayed": 0, "channel_index": null, "rx_time": 1757421153, "pki_encrypted": 0, "next_hop": 36, "relay_node": 186, "tx_after": 0, "timestamp_str": "2025-09-09 15:32:34", "hop_count": 0, "has_payload": true, "success": 1, "from_node_name": "LZ2ACE - T-echo (ACEL)", "to_node_name": "LZ2ITD tracker (2ITD)", "gateway_name": "LZ2ACE - T-echo (ACEL)", "gateway_location": { "node_id": 2825487034, "latitude": 43.2111616, "longitude": 27.9281664, "altitude": -27, "timestamp": 1757442938.664665, "timestamp_str": "2025-09-09 21:35:38", "display_name": "LZ2ACE - T-echo", "long_name": "LZ2ACE - T-echo", "short_name": "ACEL", "hw_model": "T_ECHO" } }, "resolve_names": true, "packet_id": 168137, "from_node_id": 2825487034, "to_node_id": 3743568515, "timestamp": 1757421154.4396088, "gateway_id": "!a86982ba", "raw_payload": "120100", "hop_limit": 2, "hop_start": 2, "from_node_name": "LZ2ACE - T-echo (ACEL)", "to_node_name": "LZ2ITD tracker (2ITD)", "route_data": { "route_nodes": [], "snr_towards": [ 0.0 ], "route_back": [], "snr_back": [] }, "forward_path": { "path_type": "forward", "node_ids": [ 2825487034 ], "node_names": [ "LZ2ACE - T-echo (ACEL)" ], "snr_values": [ 0.0 ], "hops": [], "is_complete": false, "total_hops": 0 }, "return_path": null, "actual_rf_path": { "path_type": "forward_rf", "node_ids": [ 2825487034, 3743568515 ], "node_names": [ "LZ2ACE - T-echo (ACEL)", "LZ2ITD tracker (2ITD)" ], "snr_values": [ 0.0 ], "hops": [ { "hop_number": 1, "from_node_id": 2825487034, "to_node_id": 3743568515, "from_node_name": "LZ2ACE - T-echo (ACEL)", "to_node_name": "LZ2ITD tracker (2ITD)", "snr": 0.0, "direction": "forward_rf", "is_target_hop": false, "distance_meters": null, "from_location_timestamp": null, "to_location_timestamp": null, "from_location_age_warning": "No location data available", "to_location_age_warning": "No location data available" } ], "is_complete": true, "total_hops": 1 } }, "has_return_path": false, "is_complete": false, "forward_path_display": "LZ2ACE - T-echo (ACEL)", "return_path_display": null, "actual_rf_path_display": "LZ2ACE - T-echo (ACEL) → LZ2ITD tracker (2ITD)", "forward_hops": [], "return_hops": [], "total_forward_distance": null, "total_return_distance": null }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!a86982ba", "channel_id": "Bulgaria", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2825487034, "to": 3743568515, "id": 2053475713, "rx_time": 1757421153, "rx_snr": 0.0, "rx_rssi": 0, "hop_limit": 2, "hop_start": 2, "via_mqtt": 0, "want_ack": 1, "priority": 70, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 36, "relay_node": 186, "tx_after": 0, "decoded": { "portnum": 70, "payload": "120100", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "snr_towards": [ 0 ], "type": "protobuf", "portnum": "TRACEROUTE_APP", "message_class": "RouteDiscovery" } } } }

Raw Packet Data (3 bytes)

120100

Hex Analysis:

Size:	3 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 #168137 Success

Packet Information

Payload Data

Decoded Data:

Route Information

Combined Traceroute Graph

Legend & Paths

Nodes

Connections

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