Duplicate or Shadow UUID Segment Creation in NSX via Azure Portal.

Products

• VMware NSX

Issue/Introduction

• When creating a network segment through the Azure Portal, it is observed that two segments are created. One with a user-defined name, and another represented by UUID. 
• When deleting the user-defined segment from the Azure Portal, only the user-defined segment is removed. 
• From the var/log/roton/nsxapi logs, there are creation events seen for both user-defined and UUID segments, where it was observed the UUID creation is created prior to user-defined segment. 

Environment

NSX 4.1.x

Cause

• From the Azure .har file at the time of the segment creation, there was a batch request seen being sent from Azure portal, towards the Azure Resource Manager. 
• The .har file will show similar to the below: 
  "      "connection": "443",
          "request": {
            "method": "POST",
            "url": "<Azure URL>.com/batch", "

Resolution

Further investigation is required from the Azure backend, to see why the Shadow segment is being created.