Bug 1966833 - [OVN] Pods can not receive multicast from other pods which are in the same namespace but different node
Summary: [OVN] Pods can not receive multicast from other pods which are in the same na...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: OpenShift Container Platform
Classification: Red Hat
Component: Networking
Version: 4.6.z
Hardware: Unspecified
OS: Unspecified
high
urgent
Target Milestone: ---
: 4.6.z
Assignee: Andrew Stoycos
QA Contact: Weibin Liang
URL:
Whiteboard:
Depends On: 1931520
Blocks:
TreeView+ depends on / blocked
 
Reported: 2021-06-02 01:54 UTC by Weibin Liang
Modified: 2021-07-14 07:16 UTC (History)
2 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2021-07-14 07:16:34 UTC
Target Upstream Version:
Embargoed:


Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Github openshift ovn-kubernetes pull 573 0 None open Bug 1966833: BACKPORT Add a cluster-wide group with node ls-to-cluster-router ports. 2021-06-14 16:55:43 UTC
Red Hat Product Errata RHBA-2021:2641 0 None None None 2021-07-14 07:16:53 UTC

Description Weibin Liang 2021-06-02 01:54:56 UTC
Description of problem:
Pods can not receive multicast from other pods which are in the same namespace but different node.

Version-Release number of selected component (if applicable):
4.6.17 and 4.6.0-0.nightly-2021-05-31-074224

How reproducible:
Always

Steps to Reproduce:
1.oc new-project  multicast-test
2.oc annotate namespace multicast-test k8s.ovn.org/multicast-enabled="true"
3.oc create -f https://raw.githubusercontent.com/weliang1/Openshift_Networking/master/Features/Pod/multicast-pod.yaml
4.Run below cmd in the two pods which are int the different nodes:
omping -m 239.255.254.24 $pod1IP $pod2IP

Actual results:
Pods can not receive multicast from other pods which are in the same namespace but different node.

Expected results:
Both pods can join multicast group 239.255.254.24 and receive muticast traffic


Additional info:

Comment 3 Weibin Liang 2021-06-10 13:07:09 UTC
This issue has been fixed in https://bugzilla.redhat.com/show_bug.cgi?id=1843695 for 4.5 release

Comment 7 Weibin Liang 2021-06-30 17:43:39 UTC
Tested and verified in 4.6.0-0.nightly-2021-06-25-031210

Comment 12 errata-xmlrpc 2021-07-14 07:16:34 UTC
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (OpenShift Container Platform 4.6.38 bug fix update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2021:2641


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