diff --git a/docs/plans/truenas-migration.md b/docs/plans/truenas-migration.md
index 31780b8..766e2ee 100644
--- a/docs/plans/truenas-migration.md
+++ b/docs/plans/truenas-migration.md
@@ -149,7 +149,7 @@ will function fine with uneven distribution, just slightly suboptimal for perfor
 ## Open Questions
 
 - [ ] Hostname for new NAS host? (nas1? storage1?)
-- [ ] IP address allocation (keep 10.69.12.50 or new IP?)
+- [ ] IP address/subnet: NAS and Proxmox are both on 10GbE to the same switch but different subnets, forcing traffic through the router (bottleneck). Move to same subnet during migration.
 - [x] Boot drive: Reuse TrueNAS boot-pool SSDs as mdadm RAID1 for NixOS root (no ZFS on boot path)
 - [ ] Retire old 8TB drives? (SMART looks healthy, keep unless chassis space is needed)
 - [ ] Drive trays: do new 24TB drives fit, or order trays from abroad?