@SDVConsulting If you use SLAAC and make sure your device doesn't use privacy MAC addresses, the address should stay stable (based on MAC address). Or, as you indicate, you can also use a static...

@SDVConsulting I tried enabling IPv6 from WAN (DHCPv6) with Prefix Delegation (for LAN). That works - hosts on LAN assigned address from delegated prefix. But even when adding various allow all IPv6...