Data plane disruption during update/upgrade from OSP older than 16.2.2, including all 16.1 versions.

Solution In Progress - Updated -

Issue

If your environment has a provider network connected by floating IP or direct port on the provider network, and you update to 16.2.2, 16.2.3, or 16.2.4, network traffic that traverses from provider network is disrupted during ovn-controller restart. (All updates and upgrades use ovn-controller-restart.) The downtime can vary depending on the number of existing workloads.

Environment

Any OSP older than 16.2.2 or any 16.1 OSP, that has a provider network connected by floating IP or direct port on the provider network.

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