Packet #163753

Database ID:	163753
Mesh Packet ID:	`0x3a2e62d8` Used for correlation across gateways
Timestamp:	2026-04-07 01:54:04 UTC
From Node:	David M > KI6EDC Nano (dnan)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	Sauce Home MQTT HDMesh.org (SS01)
Channel:	LongMod
RSSI:	-126 dBm
SNR:	-8.0 dBm
Hop Info:	2/7 hops Start: 7, Limit: 5
Relay Node:	`6b` HDR5 Last byte of the last hop that relayed this packet - Candidate source node(s) based on 0-hop direct receptions

Long Name:	David M > KI6EDC Nano
Short Name:	dnan
Node ID:	!1be6f10c
MAC Address:	9xMb5vEM
Hardware:	NANO_G2_ULTRA

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:	87 bytes
Gateway:	!33603060
Channel:	LongMod
Payload Type:	NODEINFO_APP
Hop Count:	2 / 7

Privacy Summary

Exposure Level:
Broadcast

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Custom channel: LongMod
+ 1 more...

Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
+ 2 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!33603060` Node ID format
`channel_id`	`LongMod`
`packet`	`MeshPacket` (87 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`468119820` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`87` bytes	size
`hop_limit`	`5` Remaining hops allowed	uint32
`hop_start`	`7` Initial hop limit	uint32
`hops_taken`	`2` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-126.0` dBm Signal strength at gateway	int32
`rx_snr`	`-8.00` dB Signal quality at gateway	float
`rx_time`	`1775526841` 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`	`107` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1775526844.842526` 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)
✓ Custom channel: LongMod
✓ Gateway node ID tracked

Exposure Risks:

⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (2 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!33603060`
Signal Metrics:	RSSI: -126.0 dBm SNR: -8.00 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	87 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!1be6f10c", "long_name": "David M > KI6EDC Nano ", "short_name": "dnan", "macaddr": "9xMb5vEM", "hw_model": "NANO_G2_ULTRA" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!33603060", "channel_id": "LongMod", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 468119820, "to": 4294967295, "id": 976118488, "rx_time": 1775526841, "rx_snr": -8.0, "rx_rssi": -126, "hop_limit": 5, "hop_start": 7, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 107, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a0921316265366631306312164461766964204d203e204b4936454443204e616e6f201a04646e616e2206f7131be6f10c28124220dcfd0c89d45f6024c5ea4e4f66fa326e1b161522249949c7e9e042e88cdc0b544800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!1be6f10c", "long_name": "David M > KI6EDC Nano ", "short_name": "dnan", "macaddr": "9xMb5vEM", "hw_model": "NANO_G2_ULTRA", "public_key": "3P0MidRfYCTF6k5PZvoybhsWFSIkmUnH6eBC6IzcC1Q=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (87 bytes)

0a0921316265366631306312164461766964204d203e204b4936454443204e616e6f201a04646e616e2206f7131be6f10c28124220dcfd0c89d45f6024c5ea4e4f66fa326e1b161522249949c7e9e042e88cdc0b544800

Hex Analysis:

Size:	87 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 #163753 Success

Packet Information

Payload Data

Decoded Data: