Interface parent virtual chassis validation error #1378

New Issue

MrUnknownDE · 2026-04-06T00:22:24+02:00

MrUnknownDE commented

2026-04-06 00:22:24 +02:00

Originally created by @elipsion on 8/28/2025

Deployment Type

Self-hosted

NetBox Version

v4.2.1

Python Version

3.11

Steps to Reproduce

Create two devices (DevA, DevB)
Join them in a virtual chassis
Create an interface on DevA (IntA1)
Create an interface on DevB (IntB1)
Edit IntB1, set IntA1 as parent

Expected Behavior

IntB1 has IntA1 as parent.

Observed Behavior

Django throws an AttributeError from here.

<class 'AttributeError'>

'Interface' object has no attribute 'virtual_chassis'

Python version: 3.11.11
NetBox version: 4.2.1
Plugins: 
  netbox_bgp: 0.15.0
  netbox_dns: 1.2.0

*Originally created by @elipsion on 8/28/2025* ### Deployment Type Self-hosted ### NetBox Version v4.2.1 ### Python Version 3.11 ### Steps to Reproduce 1. Create two devices (`DevA`, `DevB`) 2. Join them in a virtual chassis 3. Create an interface on `DevA` (`IntA1`) 4. Create an interface on `DevB` (`IntB1`) 5. Edit `IntB1`, set `IntA1` as parent ### Expected Behavior `IntB1` has `IntA1` as parent. ### Observed Behavior Django throws an AttributeError from [here](https://github.com/netbox-community/netbox/blame/08ae1391618dad69866717681e79a56ad9414f80/netbox/dcim/models/device_components.py#L872). ``` <class 'AttributeError'> 'Interface' object has no attribute 'virtual_chassis' Python version: 3.11.11 NetBox version: 4.2.1 Plugins: netbox_bgp: 0.15.0 netbox_dns: 1.2.0 ```

MrUnknownDE closed this issue

2026-04-06 00:22:24 +02:00

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Branches Tags

main

21455-sql-indexes-audit

21357-register-model-actions

feature

20924-plugin-ui-components

21766-improve-test-coverage-for-sortable-table-columns

21157-export-template-public-models

21025-pre-render-config-contexts

21364-swagger

feature-ip-prefix-link

20911-dropdown-3

fix_module_substitution

21160-filterset

20911-dropdown-2

20044-elevation-stuck-lightmode

7604-filter-modifiers-v3

20660-script-load

19724-graphql

14884-script

19720-macaddress-interface-generic-relation

fix-19669-api-image-download

7604-filter-modifiers

19275-fixes-interface-bulk-edit

fix-17794-get_field_value_return_list

11507-show-aggregate-and-rir-on-api

9583-add_column_specific_search_field_to_tables

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Reference: github/netbox#1378