Bug 1985461

Summary:	KVM guests behind OVS bridge cannot reach secondary IPs of a guest on "regular" bridge.
Product:	Red Hat Enterprise Linux Fast Datapath	Reporter:	lejeczek <peljasz>
Component:	openvswitch	Assignee:	Timothy Redaelli <tredaelli>
openvswitch sub component:	daemons and tools	QA Contact:	qding
Status:	NEW ---	Docs Contact:
Severity:	high
Priority:	unspecified	CC:	apevec, chrisw, ctrautma, jhsiao, jlibosva, mlavalle
Version:	FDB 18.04
Target Milestone:	---
Target Release:	---
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	Bug
Regression:	---	Mount Type:	---
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Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description lejeczek 2021-07-23 15:42:39 UTC

Description of problem:

Hi.
Apologies might be first in order as I'm not sure if this here is a correct Bugzilla section and also I'm not sure this is a bug actually.

I have a setup:

problem:
a) all guests are KVM, all CentOS.
b) I have NM managed OVS bridge and libvirtd network to/on that bridge
c) "regular" NM bridge and network off it in libvirt

problem:
guest_OVSa 10.0.0.6 pings guest_NMBRa 10.3.3.1 => OK
guest_OVSa 10.0.0.6 pings guest_NMBRa 10.3.3.2 secondary IP (managed by pcs/pacemaker) => cannot ping, "Destination Host Unreachable"
The host on which guestOVSa resides pings both guest_NMBRa's IPs OKey. 

If this might be a bug then say a word and I have configs, etc ready.

Version-Release number of selected component (if applicable):

host & guestOVSa:
4.18.0-315.el8.x86_64
host:
openvswitch2.11-2.11.3-90.el8s.x86_64
NetworkManager-ovs-1.32.3-0.z.2.20e3975fd2.el8.x86_64
libvirt-7.4.0-1.el8s.x86_64
guestOVSa:
pcs-0.10.8-3.el8.x86_64
pacemaker-2.1.0-3.el8.x86_64
guestNMBRa:
4.18.0-305.10.2.el8_4.x86_64

How reproducible:


Steps to Reproduce:
1.
2.
3.

Actual results:


Expected results:


Additional info:

Comment 1 lejeczek 2021-07-24 08:46:04 UTC

Sorry, copy&paste error above.
It is:

- host & guestNMBRa:
4.18.0-315.el8.x86_64
- host:
openvswitch2.11-2.11.3-90.el8s.x86_64
NetworkManager-ovs-1.32.3-0.z.2.20e3975fd2.el8.x86_64
libvirt-7.4.0-1.el8s.x86_64
- guestNMBRa (3-node cluster):
pcs-0.10.8-3.el8.x86_64
pacemaker-2.1.0-3.el8.x86_64
- guestOVSa:
4.18.0-305.10.2.el8_4.x86_64