Packet #28397186 Success

NEIGHBORINFO_APP packet from Meshtastic 18a4 (18a4) to !00000001

2
Total Receptions
2
Unique Gateways
0
Hop Count
23
Payload Bytes
Packet Information
Database ID: 28397186
Mesh Packet ID: 0x9ccd0107
Used for correlation across gateways
Timestamp: 2025-12-18 03:33:59 UTC
From Node: Meshtastic 18a4 (18a4)
To Node: !00000001 (0001)
Success: Processed
Protocol: NEIGHBORINFO_APP
Port: 71
Gateway: Meshtastic 1760 (1760)
Channel: MediumFast
RSSI: Unknown
SNR: Unknown
Hop Info: 0/3 hops
Start: 3, Limit: 3
Relay Node: a4 18a4
Last byte of the last hop that relayed this packet - Candidate source node(s) based on 0-hop direct receptions
Payload Data
Protocol: NEIGHBORINFO_APP
Size: 23 bytes
Decoded: Yes
Decoded Data:
Neighbor Information Report
Reporting Node: Meshtastic 18a4 (18a4)
Last Sent By: Meshtastic 18a4 (18a4)
Broadcast Interval:3600 seconds
Neighbors Found:1
1

Active Neighbors

Neighbor Details
Neighbor Node SNR Last Heard Broadcast Interval Signal Quality
Meshtastic 1760 (1760) 0.0 dB Unknown Unknown Good
This neighbor information was reported by Meshtastic 18a4 (18a4) and shows which nodes it can directly communicate with and their signal quality.
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:23 bytes
Gateway:!c0c31760
Channel:MediumFast
Payload Type:NEIGHBORINFO_APP
Hop Count:Unknown / 3
Privacy Summary
Exposure Level:
Direct Message
Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
+ 3 more...
Exposure Risks:
⚠ Packet visible to MQTT subscribers
MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

FieldValue
gateway_id !c0c31760
Node ID format
channel_id MediumFast
packet MeshPacket (23 bytes)
Contains the actual mesh network packet
MeshPacket Fields

Core mesh packet with routing and payload information

FieldValueType
from 3234011300
Source node ID 		uint32
to 1
Target node ID 		uint32
decoded.portnum 71
NEIGHBORINFO_APP 		enum
decoded.payload_length 23 bytes size
hop_limit 3
Remaining hops allowed 		uint32
hop_start 3
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 1766028839
Receive timestamp 		fixed32
via_mqtt False
Direct LoRa transmission 		bool
want_ack False
No ACK requested 		bool
priority 10
Packet priority level 		enum
delayed Not set enum
channel Not set uint32
pki_encrypted False
Standard encryption 		bool
next_hop Not set uint32
relay_node 164
Relay node ID 		uint32
tx_after Not set uint32
timestamp 1766028839.7020133
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)
  • ✓ Targeted to specific node
  • ✓ Custom channel: MediumFast
  • ✓ Gateway node ID tracked
  • ✓ Zero-hop: direct from source to MQTT gateway
Exposure Risks:
  • ⚠ Packet visible to MQTT subscribers
MQTT-Specific Fields
Gateway ID: !c0c31760
Zero Hop Policy: Enabled
Direct gateway connection
Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:
Protocol:NEIGHBORINFO_APP
Size:23 bytes
Decoded: Yes
Complete Payload Data (JSON):
{ "node_id": 3234011300, "last_sent_by_id": 3234011300, "node_broadcast_interval_secs": 3600, "neighbors": [ { "node_id": 3234010976, "snr": 0.0, "last_rx_time": null, "node_broadcast_interval_secs": null, "last_rx_time_str": "Unknown", "node_name": "Meshtastic 1760 (1760)" } ], "neighbor_count": 1, "node_name": "Meshtastic 18a4 (18a4)", "last_sent_by_name": "Meshtastic 18a4 (18a4)" }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "gateway_id": "!c0c31760", "channel_id": "MediumFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3234011300, "to": 1, "id": 2630680839, "rx_time": 1766028839, "rx_snr": 0.0, "rx_rssi": 0, "hop_limit": 3, "hop_start": 3, "via_mqtt": 0, "want_ack": 0, "priority": 10, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 164, "tx_after": 0, "decoded": { "portnum": 71, "payload": "08a4b18c860c10a4b18c860c18901c220608e0ae8c860c", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "node_id": 3234011300, "last_sent_by_id": 3234011300, "node_broadcast_interval_secs": 3600, "neighbors": [ { "node_id": 3234010976 } ], "type": "protobuf", "portnum": "NEIGHBORINFO_APP", "message_class": "NeighborInfo" } } } }
Raw Packet Data (23 bytes)
08a4b18c860c10a4b18c860c18901c220608e0ae8c860c
Hex Analysis:
Size:23 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.
All Receptions
All gateways that received this packet
Correlation: Using Mesh Packet ID
Reception Locations

Loading reception map...

Map shows gateway locations that received this packet. Hop counts are displayed if available.
Gateway Time Offset RSSI SNR Hops Relay Channel Timestamp Actions
Meshtastic 1760 (1760) Primary 0.000s
Reference 		Unknown Unknown 0 a4 18a4 MediumFast 2025-12-18 03:33:59 UTC Current
Meshtastic 18a4 (18a4) -0.451s
Before 		Unknown Unknown 0 a4 18a4 MediumFast 2025-12-18 03:33:59 UTC View
2

Total Receptions

2

Unique Gateways