openstack/neutron — Week of 2026-07-18

OVN backend. The headline feature adds advertisement of the metadata IPv6 route via the RA Route Information Option, giving instances a way to learn the metadata address over Router Advertisements (995796). A companion fix corrects the haproxy IPv6 bind address format used by the metadata service. On the mechanism-driver side, update_lsp_host_info now reads the LSP up state directly from the IDL cache and skips host-info updates entirely for router ports — both changes landed on master and were backported across three stable branches, alongside a guard that checks LSP presence before setting a port UP. A cleanup removes the BaseEvent shim and fixes matches() bypassing base_match() in the OVN event path.

Stability and internals. load_db_migration_drivers was repaired, and the quota module drops the unused set_all_quota_usage_dirty() helper. A functional test now tracks socket fds so they get cleaned up between runs.

CI. Failing tests on CentOS 10 Stream are temporarily skipped to unblock the gate.

Overall the week is dominated by OVN LSP host-info handling, with roughly a dozen of the fifteen merges touching the OVN backend or its stable-branch backports.