+++ This bug was initially created as a clone of Bug #2229935 +++ Description of problem: After enabling IP forward functionality, VMs can only ping each other but not SSH or do iperf3 tests. This happens on both ARM64 RHEL 8.9 and RHEL 9.3. Version-Release number of selected component (if applicable): 4.18.0-506.el8.aarch64 5.14.0-347.el9.aarch64 How reproducible: 100% Steps to Reproduce: Polarion test case - https://polarion.engineering.redhat.com/polarion/#/project/RHELVIRT/workitem?id=RHEL-196234 OR follow steps in previously reported bug - https://bugzilla.redhat.com/show_bug.cgi?id=1898280#c6 SSH from 'sender' VM to 'receiver' VM, or vice versa. Use iperf3 to send/receive traffic. Actual results: Neither SSH or iperf3 can find the destination address. But ping is okay (less than 10ms delay). Expected results: Should be able to SSH and do iperf3 Additional info: Issue does not present on x86_64 RHEL 8.9 or 9.3.
We forgot to disable firewalld in ARM64 image and caused this. Sorry. False alarm.