btzq opened a new issue, #9791:
URL: https://github.com/apache/cloudstack/issues/9791

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   ##### ISSUE TYPE
   <!-- Pick one below and delete the rest -->
    * Bug Report
   
   ##### COMPONENT NAME
   <!--
   Categorize the issue, e.g. API, VR, VPN, UI, etc.
   -->
   ~~~
   VR + VNF
   ~~~
   
   ##### CLOUDSTACK VERSION
   <!--
   New line separated list of affected versions, commit ID for issues on main 
branch.
   -->
   
   ~~~
   4.19.1
   ~~~
   
   ##### CONFIGURATION
   <!--
   Information about the configuration if relevant, e.g. basic network, 
advanced networking, etc.  N/A otherwise
   -->
   Advanced Networking
   VPC
   VNF + L2 Network
   
   ##### OS / ENVIRONMENT
   <!--
   Information about the environment if relevant, N/A otherwise
   -->
   
   
   ##### SUMMARY
   <!-- Explain the problem/feature briefly -->
   
   We have 1 VPC and 1 L2 Network connected together with a VNF (PFsense) in 
between. 
   
   Results Summary:
   - Test 1: From L2 VM (10.26.8.230) to VPC VM (10.26.1.250) - PASS
   - Test 2: From VPC VM (10.26.1.250) to L2 VM (10.26.8.230) - FAILED
   - Test 3: From L2 VM (10.26.8.230) to Private Gateway VM (10.88.5.82) - PASS
   - Test 4: From Private Gateway VM (10.88.5.82) to L2 VM (10.26.8.230) - 
FAILED
   
   Background:
   We’ve allowed any on the VNF firewall rules as attached in the screenshot 
below:
   
   ![Screenshot 2024-10-14 at 9 03 26 
PM](https://github.com/user-attachments/assets/fcddf19d-3c10-4e12-8571-e7144e5a8ea2)
   
   Traffic is allowed any on 10.26.1.254 interface
   
   ![Screenshot 2024-10-14 at 9 03 55 
PM](https://github.com/user-attachments/assets/b4fe623e-c3f8-42ef-9bfe-f30138b934aa)
   
   Traffic is allowed any on 10.26.8.254
   
   We then run some tests. 
   
   Test 1: From L2 VM (10.26.8.230) to VPC VM (10.26.1.250)
   ![Screenshot 2024-10-14 at 9 04 32 
PM](https://github.com/user-attachments/assets/0e003313-9e20-4d48-9da4-9f313a11f2bc)
   
   Results: Ping and traceroute test from 10.26.8.230 to 10.26.1.250 works as 
expected. (PASS)
   
   ![Screenshot 2024-10-14 at 9 05 11 
PM](https://github.com/user-attachments/assets/c37a7f27-9a61-49e1-90ca-10dafcf3061a)
   
   Test 2: From VPC VM (10.26.1.250) to L2 VM (10.26.8.230)
   
   ![Screenshot 2024-10-14 at 9 05 32 
PM](https://github.com/user-attachments/assets/4d9fde56-11c6-411f-9095-53223fe8e3da)
   
   Results: Ping and traceroute test from 10.26.1.250 to 10.26.8.230 is not 
possible (FAILED)
   
   ![Screenshot 2024-10-14 at 9 06 01 
PM](https://github.com/user-attachments/assets/8f2d9fa8-a4bf-428d-a82f-fd3f29f1d5a0)
   
   Test 3: From L2 VM (10.26.8.230) to Private Gateway VM (10.88.5.82)
   ![Screenshot 2024-10-14 at 9 07 42 
PM](https://github.com/user-attachments/assets/94cdf87e-7ab1-408d-b22d-36d1dba36e71)
   Results: Ping and traceroute test from 10.26.8.230 to 10.88.5.82 works as 
expected (PASS)
   
   Test 4: From Private Gateway VM (10.88.5.82) to L2 VM (10.26.8.230)
   ![Screenshot 2024-10-14 at 9 08 14 
PM](https://github.com/user-attachments/assets/96a3fd00-2c6a-47d5-a5f6-8fdbf03ededd)
   
   Results: Ping and traceroute test from 10.88.5.82 to 10.26.8.230 does not 
work (FAILED)
   ![Screenshot 2024-10-14 at 9 08 36 
PM](https://github.com/user-attachments/assets/f2f52757-e0d9-4a5b-beb9-9e084293a244)
   
   We've been trying to debug Tests 2 and 4 for a while now with no sucess. 
Anyone has any ideas? 
   Or is Cloudstack designed not to allow this to be possible?
   
   
   ##### STEPS TO REPRODUCE
   <!--
   For bugs, show exactly how to reproduce the problem, using a minimal 
test-case. Use Screenshots if accurate.
   
   For new features, show how the feature would be used.
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   <!-- Paste example playbooks or commands between quotes below -->
   ~~~
   NA
   ~~~
   
   <!-- You can also paste gist.github.com links for larger files -->
   
   ##### EXPECTED RESULTS
   <!-- What did you expect to happen when running the steps above? -->
   
   ~~~
   Tests 2 and 4 should be able to work
   ~~~
   
   ##### ACTUAL RESULTS
   <!-- What actually happened? -->
   
   <!-- Paste verbatim command output between quotes below -->
   ~~~
   Tests 2 and 4 does not work
   ~~~
   


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