Packet #164539

Database ID:	164539
Mesh Packet ID:	`0x73434657` Used for correlation across gateways
Timestamp:	2026-04-04 01:26:09 UTC
From Node:	Kup (☕)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	Yanks Attic Node (YANK)
Channel:	LongFast
RSSI:	-124 dBm
SNR:	-12.0 dBm
Hop Info:	4/4 hops Start: 4, Limit: 0
Relay Node:	`c2` cec2 Last byte of the last hop that relayed this packet - Candidate source node(s) based on 0-hop direct receptions

Long Name:	Kup
Short Name:	☕
Node ID:	!f63134dd
MAC Address:	5U/2MTTd
Hardware:	TRACKER_T1000_E

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:	67 bytes
Gateway:	!c0e216ce
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	4 / 4

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`	`!c0e216ce` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (67 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`4130419933` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`67` bytes	size
`hop_limit`	Not set	uint32
`hop_start`	`4` Initial hop limit	uint32
`hops_taken`	`4` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-124.0` dBm Signal strength at gateway	int32
`rx_snr`	`-12.00` dB Signal quality at gateway	float
`rx_time`	`1775265966` 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`	`194` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1775265969.94008` 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 (4 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!c0e216ce`
Signal Metrics:	RSSI: -124.0 dBm SNR: -12.00 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	67 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!f63134dd", "long_name": "Kup", "short_name": "☕", "macaddr": "5U/2MTTd", "hw_model": "TRACKER_T1000_E" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!c0e216ce", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 4130419933, "to": 4294967295, "id": 1933788759, "rx_time": 1775265966, "rx_snr": -12.0, "rx_rssi": -124, "hop_limit": 0, "hop_start": 4, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 194, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a0921663633313334646412034b75701a03e298952206e54ff63134dd28474220e7f27d5800a0170d918ee6b15b88cae464293a1785b4a2d0da2d28c11f0aa3404800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!f63134dd", "long_name": "Kup", "short_name": "☕", "macaddr": "5U/2MTTd", "hw_model": "TRACKER_T1000_E", "public_key": "5/J9WACgFw2RjuaxW4jK5GQpOheFtKLQ2i0owR8Ko0A=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (67 bytes)

0a0921663633313334646412034b75701a03e298952206e54ff63134dd28474220e7f27d5800a0170d918ee6b15b88cae464293a1785b4a2d0da2d28c11f0aa3404800

Hex Analysis:

Size:	67 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 #164539 Success

Packet Information

Payload Data

Decoded Data: