diff --git a/migration/window-evidence/2026-09-06-dhcpv6.txt b/migration/window-evidence/2026-09-06-dhcpv6.txt
index 7951266..ecbeadf 100644
--- a/migration/window-evidence/2026-09-06-dhcpv6.txt
+++ b/migration/window-evidence/2026-09-06-dhcpv6.txt
@@ -87,3 +87,11 @@ STILL OPEN FOR THE ATTENDED SESSION
   - the two arm64 nodes: why the DHCPv6 transaction does not complete.
   - whether to keep MAC keys (works for x86 Fedora, unproven for arm) or move to
     DUID keys / a dynamic range + labctl discovery for uniformity.
+
+=== CLOSED 2026-09-06: all five nodes bound, aitopatom done ===
+addr-gen-mode=eui64 rolled out fleet-wide + baked into provisioning (6c94371).
+aitopatom-3a1c reached via michal@ (root@ refused key), took ::27 immediately on
+the flip. Final: worker0 ::23, worker2 ::25, worker1 ::13, spark ::12,
+aitopatom ::27 -- all match their reservations, cluster 5/5 Ready.
+The keying scheme (MAC + enforced EUI-64) is proven and enforced; remaining IPv6
+work is egress + the cluster conversion, both attended.