Broken transaction after checking for uniqueness

[smalash]

I created a simple project with one application and a model.
https://github.com/SergeyMalash/test_unique

It has two unique fields.
Also in the settings I specified ATOMIC_REQUESTS
When I make a POST request with an invalid IP address, an error occurs (screenshot)

My assumptions:
As far as I understand, during the check for uniqueness, a DataError exception occurs, since postgres can't compare inet field with an incorrect IP address
This breaks all subsequent calls to the database.
https://github.com/encode/django-rest-framework/blob/master/rest_framework/validators.py#L71

Am I right?
How can this be fixed?
I need to leave ATOMIC_REQUESTS enabled

My issue is partially related to #3381
But I didn't find a solution there.

https://pastebin.com/bDuQvje4
https://pastebin.com/7VaWjMaZ