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Bug 1943525

Summary: when removing a veth, should also remove connection of its peer
Product: Red Hat Enterprise Linux 8 Reporter: Mingyu Shi <mshi>
Component: nmstateAssignee: Fernando F. Mancera <ferferna>
Status: CLOSED CURRENTRELEASE QA Contact: Mingyu Shi <mshi>
Severity: high Docs Contact:
Priority: high    
Version: 8.4CC: ferferna, fge, jiji, jishi, network-qe, till
Target Milestone: rcKeywords: Triaged
Target Release: 8.6Flags: pm-rhel: mirror+
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: Doc Type: No Doc Update
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2022-04-26 07:23:57 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description Mingyu Shi 2021-03-26 11:06:52 UTC
Description of problem:
When taking a veth absent, if not present its peer in desired state, then peer's connection will remain. That causes NM recreate veth peer on timeout.

Version-Release number of selected component (if applicable):
nmstate-1.0.2-5.el8.noarch
nispor-1.0.1-4.el8.x86_64
NetworkManager-1.30.0-4.el8.x86_64

How reproducible:
100%

Steps to Reproduce:
echo "interfaces:
- name: veth0
  type: veth
  state: up
  veth:
    peer: veth0_ep" | nmstatectl set -
echo "interfaces:
- name: veth0
  type: veth
  state: absent" | nmstatectl set -
ip link show veth0
nmcli con

Actual results:
NM connection of veth0_ep remained
After a timeout, NM will activate it again, that causes veth0 and veth0_ep come back

Expected results:
Remove veth0 and veth0_ep from kernel and NM connections 

Additional info:

Comment 3 Gris Ge 2022-04-21 06:06:12 UTC
Changing to RHEL 9 and this is already fixed by rust.

For RHEL 8, no need to fix this anymore.