openstack/neutron — Week of 2026-08-22

PVLAN on OVN. The largest change wires up management of PVLAN port groups in the OVN backend, driven by enabling or disabling the PVLAN plugin (998184). It's the week's headline feature and lands roughly 166 lines of new backend logic.

BGP and segments. A new leak_routes API attribute lands for BGP, joined by a small follow-up adding output_port on the main LR static route. On the segments side, operators can now shrink a segment range down to its allocated boundary rather than being blocked by existing allocations — merged on master and backported one branch.

Stability. The iptables_hybrid firewall driver picked up a fix for conntrack zones not being restored on agent restart, backported across four branches. In netlink_lib, list_entries now parses only known protocols, avoiding failures on unexpected entries.

Maintenance. neutron-lib requirements were bumped to 5.0.0, and rally / rally-openstack were pinned on two stable branches to keep those gates green.