Packet #29852

Database ID:	29852
Mesh Packet ID:	`0xeb71ad66` Used for correlation across gateways
Timestamp:	2026-04-21 07:25:44 UTC
From Node:	Calama (NOD2)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	Carlos S (NOD0)
Channel:	LongFast
RSSI:	-61 dBm
SNR:	6.25 dBm
Hop Info:	0/4 hops Start: 4, Limit: 4
Relay Node:	`7c` NOD2 Last byte of the last hop that relayed this packet - Candidate source node(s) based on 0-hop direct receptions

Long Name:	Calama
Short Name:	NOD2
Node ID:	!d676477c
MAC Address:	TOvWdkd8
Hardware:	DIY_V1

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:	71 bytes
Gateway:	!e826b168
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	0 / 4

Privacy Summary

Exposure Level:
Broadcast

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Gateway node ID tracked
+ 1 more...

Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
+ 2 more...

MQTT ServiceEnvelope Fields

Field	Value
`gateway_id`	`!e826b168` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (71 bytes) Contains the actual mesh network packet

MeshPacket Fields

Canonical MeshPacket view reconstructed from stored protobuf bytes.

Field	Value	Type
`from`	`3598075772` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`NODEINFO_APP` NODEINFO_APP	enum
`decoded.payload_length`	`71` bytes	size
`hop_limit`	`4` Remaining hops allowed	uint32
`hop_start`	`4` Initial hop limit	uint32
`hops_taken`	`0` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-61.0` dBm Signal strength at gateway	int32
`rx_snr`	`6.25` dB Signal quality at gateway	float
`rx_time`	`1776756343` 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`	`8` Channel index	uint32
`pki_encrypted`	False Standard encryption	bool
`next_hop`	Not set	uint32
`relay_node`	`124` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	Not set	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
✓ Zero-hop: direct from source to MQTT gateway

Exposure Risks:

⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!e826b168`
Zero Hop Policy:	Enabled Direct gateway connection
Signal Metrics:	RSSI: -61.0 dBm SNR: 6.25 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	71 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!d676477c", "long_name": "Calama", "short_name": "NOD2", "macaddr": "TOvWdkd8", "hw_model": "DIY_V1" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "packet": { "from": 3598075772, "to": 4294967295, "channel": 8, "decoded": { "portnum": "NODEINFO_APP", "payload": "CgkhZDY3NjQ3N2MSBkNhbGFtYRoETk9EMiIGTOvWdkd8KCdCIJdIeqSZNiImcsJ+HBv4DwRNubb+8VU0M6/lU+zBQwpfSAA=", "bitfield": 1 }, "id": 3950095718, "rx_time": 1776756343, "rx_snr": 6.25, "hop_limit": 4, "rx_rssi": -61, "hop_start": 4, "relay_node": 124, "transport_mechanism": "TRANSPORT_LORA" }, "channel_id": "LongFast", "gateway_id": "!e826b168" }, "mesh_packet": { "from": 3598075772, "to": 4294967295, "channel": 8, "decoded": { "portnum": "NODEINFO_APP", "payload": "CgkhZDY3NjQ3N2MSBkNhbGFtYRoETk9EMiIGTOvWdkd8KCdCIJdIeqSZNiImcsJ+HBv4DwRNubb+8VU0M6/lU+zBQwpfSAA=", "bitfield": 1, "parsed_payload": { "id": "!d676477c", "long_name": "Calama", "short_name": "NOD2", "macaddr": "TOvWdkd8", "hw_model": "DIY_V1", "public_key": "l0h6pJk2IiZywn4cG/gPBE25tv7xVTQzr+VT7MFDCl8=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } }, "id": 3950095718, "rx_time": 1776756343, "rx_snr": 6.25, "hop_limit": 4, "rx_rssi": -61, "hop_start": 4, "relay_node": 124, "transport_mechanism": "TRANSPORT_LORA" } }

Raw Packet Data (71 bytes)

0a09216436373634373763120643616c616d611a044e4f443222064cebd676477c2827422097487aa49936222672c27e1c1bf80f044db9b6fef1553433afe553ecc1430a5f4800

Hex Analysis:

Size:	71 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 #29852 Success

Packet Information

Payload Data

Decoded Data: