Issue Description

When upgrade prompt error message：Upgrade is not supported because second-passthrough traffic is allowed. Please go to System > General > System > Network and disable it before performing upgrade. As shown below:

Error/Warning Information

Handling Process

1. Disable the second pass through option.
   Path: System > General > System > Network
   
2. Perform upgrade again, NGAF able to upgrade successful.

Root Cause

NGAF had enabled the second pass through cause upgarde failed in appre.

Solution

Disable the second pass through option.
Note: In different version will show the naming will be different.