DHCPv6-PD not giving/renewing to some clients.

Hello, I’m experiencing some issues with PPPoE DHCPv6 + Radius.
I’m assigning always the same prefix via Delegated-IPv6-Prefix radius option, some clients are not getting the prefix renewed and they keeps being without ipv6 after lease time expired because this.

I’m not assigning prefixes or address to the ONT WAN only the PD to the LAN interface.

I tried to debug the issue and all I can see its the clients try to renew the lease but the server respond with status: 6 - no prefix

This is the error, I wonder if its because client compatibility or some obscure implementation on the client ONT IPv6.
Captura desde 2024-07-12 06-50-42.png
Thanks you guys.

SOLVED. It was a missconfiguration in some ONTs