Bug 2073182

Summary:	[16.2][OVN migration]Trunk subport connectivity is broken after VM reboot
Product:	Red Hat OpenStack	Reporter:	Roman Safronov <rsafrono>
Component:	python-networking-ovn	Assignee:	Arnau Verdaguer <averdagu>
Status:	ON_DEV ---	QA Contact:	Eran Kuris <ekuris>
Severity:	high	Docs Contact:
Priority:	unspecified
Version:	16.2 (Train)	CC:	apevec, averdagu, egarciar, lhh, majopela, scohen, twilson
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Clones:	2192580 (view as bug list)		Environment:
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
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Bug Blocks:	2052341, 2192580

Description Roman Safronov 2022-04-07 20:39:35 UTC

Description of problem:
After rebooting a VM with a trunk port, it's subport connectivity is broken.

Version-Release number of selected component (if applicable):
RHOS-16.2-RHEL-8-20220329.n.2
python3-networking-ovn-7.4.2-2.20220113214853.el8ost.noarch
ovn-2021-21.12.0-11.el8fdp.x86_64

How reproducible:
100%

Steps to Reproduce:
1. Deploy an environment with OVS network backend. 
2. Create 2 VMs, each with a trunk port which has a subport connected to the same network. Make sure that ping between subports is working.
3. Migrate to OVN according to the official documentation. Make sure that ping between subports is still working after the migration.
4. Reboot the VMs, wait until they are up again and try to login into one of the VMs and ping from there a subport of the second VMs.

Actual results:
No response to ping requests

Expected results:
Ping works

Additional info: