Description updated with SRU documentation, apologies for the delay. ** Description changed:
- In an OpenStack Ussuri (both Focal and Bionic) cloud we discovered that - multicast traffic would fail between VMs on different hypervisors and - when using provider networks. The following table reflects what we - found works/didn't work: + [Impact] + In an OpenStack Ussuri (both Focal and Bionic) cloud we discovered that multicast traffic would fail between VMs on different hypervisors and when using provider networks. - https://paste.ubuntu.com/p/QZZBjrTSFQ/ + [Test Plan] + The upstream fix also contains an addition to the OVN testsuite confirming the correct behavior. We cat utilize this test case to perform both a control test on a unmodified package as well as confirming that a updated package fixes the problem. + + [Regression Potential] + The fix touches a code path that is executed only when OVN is configured to enable handling of Multicast traffic. The fix has also been available for several upstream releases without any reported issues. + + [Original Bug Description] + In an OpenStack Ussuri (both Focal and Bionic) cloud we discovered that multicast traffic would fail between VMs on different hypervisors and when using provider networks. The following table reflects what we found works/didn't work: + + https://paste.ubuntu.com/p/QZZBjrTSFQ/ Based on this, I went looking at relevant changes upstream and found that this appears to have been fixed upstream, but not backported to OVN 20.03: https://github.com/ovn- org/ovn/commit/97778ab3e422ac071faa67f9f477fd54977e9c04 I backported this patch to the version of OVN in Ussuri here: https://launchpad.net/~elmo/+archive/ubuntu/sf322809 These patched packages have been tested on a customer site and confirmed to fix the problem. I've attached the patch from the PPA for convenience. ** Changed in: ovn (Ubuntu Focal) Status: Incomplete => In Progress -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1957817 Title: Multicast traffic is broken between VMs on different hypervisors using provider networks To manage notifications about this bug go to: https://bugs.launchpad.net/cloud-archive/+bug/1957817/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
