Bug 1995871 - OpenShift SDN doesn't add NOTRACK rule to raw iptables table to prevent vxlan from reaching conntrack
Summary: OpenShift SDN doesn't add NOTRACK rule to raw iptables table to prevent vxlan...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: OpenShift Container Platform
Classification: Red Hat
Component: Networking
Version: 4.6
Hardware: Unspecified
OS: Unspecified
high
high
Target Milestone: ---
: 4.8.z
Assignee: Andrew Stoycos
QA Contact: Ying Wang
URL:
Whiteboard:
Depends On: 1985336
Blocks: 1995872
TreeView+ depends on / blocked
 
Reported: 2021-08-20 02:05 UTC by OpenShift BugZilla Robot
Modified: 2021-10-26 07:18 UTC (History)
11 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
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Clone Of:
Environment:
Last Closed: 2021-09-07 04:14:05 UTC
Target Upstream Version:

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Links
System ID Private Priority Status Summary Last Updated
Github openshift sdn pull 337 0 None None None 2021-08-24 20:24:46 UTC
Red Hat Product Errata RHBA-2021:3299 0 None None None 2021-09-07 04:14:19 UTC

Comment 3 Ying Wang 2021-08-30 07:33:22 UTC 
Checked on version 4.8.0-0.nightly-2021-08-29-075226, issue is fixed.



sh-4.4# iptables -t raw -S
-P PREROUTING ACCEPT
-P OUTPUT ACCEPT
-N OPENSHIFT-NOTRACK
-A PREROUTING -m comment --comment "disable conntrack for vxlan" -j OPENSHIFT-NOTRACK
-A OUTPUT -m comment --comment "disable conntrack for vxlan" -j OPENSHIFT-NOTRACK
-A OPENSHIFT-NOTRACK -p udp -m udp --dport 4789 -j NOTRACK



% oc version
Client Version: 4.9.0-0.nightly-2021-08-18-144658
Server Version: 4.8.0-0.nightly-2021-08-29-075226
Kubernetes Version: v1.21.1+9807387
Comment 6 errata-xmlrpc 2021-09-07 04:14:05 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 4.8.10 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-2021:3299
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