Bug 1988189 - Host -> service - host endpoint on same node traffic is not offloaded with OVN Kubernetes: combination of CT/CT(nat) in the datapath
Summary: Host -> service - host endpoint on same node traffic is not offloaded with OV...
Keywords:
Status: CLOSED DUPLICATE of bug 1953278
Alias: None
Product: OpenShift Container Platform
Classification: Red Hat
Component: Networking
Version: 4.9
Hardware: Unspecified
OS: Unspecified
high
high
Target Milestone: ---
: ---
Assignee: Mohamed Mahmoud
QA Contact: Anurag saxena
URL:
Whiteboard:
Depends On:
Blocks: 1955160
TreeView+ depends on / blocked
 
Reported: 2021-07-30 02:32 UTC by zenghui.shi
Modified: 2021-08-09 02:40 UTC (History)
2 users (show)

Fixed In Version:
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Last Closed: 2021-08-09 02:40:01 UTC
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Description zenghui.shi 2021-07-30 02:32:37 UTC 
Description of problem:


One issue identified during debugging bz1983894 is the combined use of CT/CT(nat) for original traffic causing CT actions not to be offloaded, see https://bugzilla.redhat.com/show_bug.cgi?id=1983894#c15

This bug is created to track the combined use of CT/CT(nat) issue.

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

Details about the ovs/ovn/kernel/ovn-k8s versions and ovs datapath flows analysis for asymmetric issue can be found at https://bugzilla.redhat.com/show_bug.cgi?id=1983894#c0

Additional info:

There is a similar asymmetric path issue that was found for pod to external traffic: https://bugzilla.redhat.com/show_bug.cgi?id=1953278
which has a fix proposed in ovn project
Comment 1 Marcelo Ricardo Leitner 2021-07-30 19:10:59 UTC 
This bug potentially affects other use cases as well and will cause issues with CT HWOL, as Zenghui indicated.
Comment 3 zenghui.shi 2021-08-09 02:38:44 UTC 
This issue (combination of CT/CT(nat)) was fixed by updating ovn version to 21.09-host-21.09.0-8.el8fdp

Detailed test result can be found at: https://bugzilla.redhat.com/show_bug.cgi?id=1986662#c9
Comment 4 zenghui.shi 2021-08-09 02:40:01 UTC 

*** This bug has been marked as a duplicate of bug 1953278 ***
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