[Impact] L2 broadcasts are sent out in order to update MAC tables of the switches in the same broadcast domain. If this is not done after live migration there may be a temporary downtime period for clients trying to connect to services residing on a migrated VM due to the fact that switches will still forward frames to the old destination. It will also lead to varying behaviors depending on the operating system or software installed in the guest OS with regards to network activity: there may be cases when VM's network activity will force the MAC table update across the L2 network but this is not guaranteed.
[Test case] Steps are provided in the bug description. [Regression Potential] Small: the change is trivial and is present both in the upstream QEMU and the newer ubuntu releases. This is also not a heavily changing code path in the upstream. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1656480 Title: QEMU Does not Send L2 Broadcasts After Live Migration To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1656480/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
