[✅ Solved] How to make DHCPv6 only to work ?

[lox]

I have a /48 static IPV6 from my ISP : xxxx:xxxx:xxxx:/48

I set the LAN to track WAN with :
- Assign prefix ID : 0
- Optional interface ID : 1

My DHCPV6 is set as follows:
- Available range: xxxx:xxxx:xxxx:: - xxxx:xxxx:xxxx:0:ffff:ffff:ffff:ffff
- From: ::ffff:0
- To: ::ffff:ffff:ffff:ffff

I then set Ra to
- "managed" : client get the IPV6 gateway, but not IPV6 at all
- "unmanaged" : client get the IPV6 gateway, SLAAC IPV6, no IPV6 in DHCPV6 range
- "assisted" : client get the IPV6 gateway, SLAAC IPV6, no IPV6 in DHCPV6 range

What am I doing wrong ?

[lox]

My bad : android devices do not support DHCPV6. SLAAC is therefor mandatory.