NSE4 High Availability and Diagnostics Practice Question
An administrator runs 'diagnose debug flow' for a specific policy and sees the following output: id=20085 trace_id=10 func=vf_ip_route_in msg='No matching interface to route packet' What does this indicate?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The destination IP address has no matching route in the routing table
The trace indicates that FortiGate cannot find a route to forward the packet, meaning the destination is unreachable.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The packet is being blocked by a firewall policy
Why it's wrong here
The error is about routing, not policy blocking.
- ✗
The source interface is down
Why it's wrong here
The error is about destination routing, not source interface status.
- ✓
The destination IP address has no matching route in the routing table
Why this is correct
The message clearly states no matching interface to route the packet.
- ✗
The session table is full
Why it's wrong here
Session table full would generate a different error.
Go deeper
Related to this question
About these practice questions
This NSE4 question is part of Courseiva's 282-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This NSE4 practice question is part of Courseiva's free Fortinet certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the NSE4 exam.