Changes are not reflected correctly when deleting a primary ip for a device

[blipnet]

Deployment Type

Self-hosted

NetBox Version

v3.5.7

Python Version

3.8

Steps to Reproduce

1. create a device with and an interface on device
2. create an IP-address and associate it to interface and make it primary ip
3. delete the IP-address

When deleting the IP-address changelog gets two entries, first one as update on device and then delete of IP-address

Expected Behavior

The device update should have following:
pre-change - original device data
post-change - the device data with null as primary_ip

Observed Behavior

The device update gets following:
pre-change - "Warning: Comparing non-atomic change to previous change record"
post-change - the device data, and it also has an IP-address id as primary_ip

Same behavior is seen in webhooks

[DanSheps]

Thank you for opening a bug report. I was unable to reproduce the reported behavior on NetBox v3.6.6. Please re-confirm the reported behavior on the current stable release and adjust your post above as necessary. Remember to provide detailed steps that someone else can follow using a clean installation of NetBox to reproduce the issue. Remember to include the steps taken to create any initial objects or other data.

[blipnet]

I have now tested the same on Netbox DEMO page with same behavior. I hope this gives you a better view of the issue.

Preparation:

1. create a device role named A
2. create a device type named A
3. create a device named A with device role A and device type A
4. create an interface on device named eth
5. create an IP-address named 1.2.3.4/24 and assign to device A interface eth, check the checkbox to make it primary

Now when deleting the IP-address we get two change logs.

1. Update on device A
2. Delete of IP-address 1.2.3.4/24
   The change log on device never shows the update of primary IP

Below is from Netbox Demo page