Packet #2690167

Packet Information

Database ID:	2690167
Mesh Packet ID:	`0x5d468fe5` Used for correlation across gateways
Timestamp:	2026-10-13 12:28:28 UTC
From Node:	CS7BHV-8 (DJI)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	UNKNOWN_37 Port: 37

Gateway:	CS7BHV-8 (DJI)
Channel:	LongFast
RSSI:	Unknown
SNR:	Unknown
Hop Info:	0/0 hops Start: 0, Limit: 0
Relay Node:	`22` DJI Last byte of the last hop that relayed this packet - Candidate source node(s) based on 0-hop direct receptions

Payload Data

Protocol: UNKNOWN_37

Size: 70 bytes

Decoded: No

No decoder available for UNKNOWN_37

Text Content:

0a15435337424856202d204f6cc3a121203733e280997312291220e5a77ad35cd60dbf61e7ba7a6184ff222c8e6739efe26d21c63a46de927a41871a05546573746518032000

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:	70 bytes
Gateway:	!dd8da822
Channel:	LongFast
Payload Type:	37
Hop Count:	0 / 0

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
+ 1 more...

MQTT ServiceEnvelope Fields

Field	Value
`gateway_id`	`!dd8da822` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (70 bytes) Contains the actual mesh network packet

MeshPacket Fields

Canonical MeshPacket view reconstructed from stored protobuf bytes.

Field	Value	Type
`from`	`3717048354` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`37` 37	enum
`decoded.payload_length`	`70` bytes	size
`hop_limit`	Not set	uint32
`hop_start`	Not set	uint32
`hops_taken`	`0` Calculated: hop_start - hop_limit	derived
`rx_rssi`	Not set	int32
`rx_snr`	Not set	float
`rx_time`	`1791894507` Receive timestamp	fixed32
`via_mqtt`	False Direct LoRa transmission	bool
`want_ack`	False No ACK requested	bool
`priority`	`BACKGROUND` Packet priority level	enum
`delayed`	Not set	enum
`channel`	`8` Channel index	uint32
`pki_encrypted`	False Standard encryption	bool
`next_hop`	Not set	uint32
`relay_node`	`34` 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

MQTT-Specific Fields

Gateway ID:	`!dd8da822`
Zero Hop Policy:	Enabled Direct gateway connection

Complete Protobuf Decode (JSON)

{ "service_envelope": { "packet": { "from": 3717048354, "to": 4294967295, "channel": 8, "decoded": { "portnum": 37, "payload": "ChVDUzdCSFYgLSBPbMOhISA3M+KAmXMSKRIg5ad601zWDb9h57p6YYT/IiyOZznv4m0hxjpG3pJ6QYcaBVRlc3RlGAMgAA==", "bitfield": 1 }, "id": 1564905445, "rx_time": 1791894507, "priority": "BACKGROUND", "relay_node": 34 }, "channel_id": "LongFast", "gateway_id": "!dd8da822" }, "mesh_packet": { "from": 3717048354, "to": 4294967295, "channel": 8, "decoded": { "portnum": 37, "payload": "ChVDUzdCSFYgLSBPbMOhISA3M+KAmXMSKRIg5ad601zWDb9h57p6YYT/IiyOZznv4m0hxjpG3pJ6QYcaBVRlc3RlGAMgAA==", "bitfield": 1, "parsed_payload": { "raw_bytes": "0a15435337424856202d204f6cc3a121203733e280997312291220e5a77ad35cd60dbf61e7ba7a6184ff222c8e6739efe26d21c63a46de927a41871a05546573746518032000", "type": "unknown_or_custom", "portnum": "37", "note": "Invalid or missing portnum_name" } }, "id": 1564905445, "rx_time": 1791894507, "priority": "BACKGROUND", "relay_node": 34 } }

Raw Packet Data (70 bytes)