2026.1 Series Release Notes

28.0.0

Upgrade Notes

• Following the lead from Neutron, support for the eventlet library has been dropped. Although not a user facing change, users should be on the lookout for multi-threading related bugs now that networking-mlnx uses native threads.

• Support for Python 3.9 has been dropped as it is no longer a supported OpenStack runtime.

Bug Fixes

• Fixed a race in neutron-mlnx-agent where its state report thread and its main loop could send requests to eswitchd on the same ZeroMQ socket at the same time. The main loop then stopped with ZMQError: Operation cannot be accomplished in current state while the agent was still reported as alive, so ports were never bound and instances with InfiniBand ports failed to boot with a VIF plugging timeout. Requests are now serialised, and the socket is replaced after a failed request.