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Description of problem:
This is a same bug with 2207812, it is also observed in RHEL-8.9.
Sometimes when adding a 3rd interface to an EC2 instance, the 2nd interface ends up using the same rule and route table as the new interface.
Version-Release number of selected component (if applicable):
RHEL-8.9
How reproducible:
Frequently by building new RHEL8.9 instance. Once issue is reproduced, instance becomes inaccessible, then detaching the interface and rebooting returns instance to ready-to-be-reproduced state, then adding the same 3rd interface frequently reproduces the problem again.
Steps to Reproduce:
1.Launch a r5a.24xlarge instance using ami-0a558068fc4385358 (us-west-2) from RHEL-8.9.0 image.
2. Once it's running, attach a secondary ENI to the instance.
3. Try and attach another ENI to the instance.
Actual results:
instance hangs when 2nd instance ip rule/route table conflict occurs.
Expected results:
ip rules/route tables do not conflict.
Additional info:
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 (NetworkManager bug fix and enhancement 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-2023:7118