CNI ADD now adds anycast IPs to the pod's lo interface (NOT eth0 — design
doc rationale: avoid NDP/ARP DAD conflicts when N replicas share an IP).
Allocation persists the anycast list.
AnycastReconciler:
desired = { ip → flock<8hex> } from
committed allocations × pod.Status.PodReady=True
diff against advertised, install/remove host /128 (v6) or /32 (v4)
re-render bird.conf with the active set
Triggers: 2s tick, AfterCommit (per ADD/DEL), Pod informer Ready
transitions (PodCache.OnReadyChange callback).
The bird template already supported Anycast6/Anycast4 via the export
filter — this turn finally drives those slices from runtime.
Co-Authored-By: Claude Sonnet 4.6 (1M context) <noreply@anthropic.com>
Donavan Fritz