So I had the IPv6 working on the FritzBox but had to replace it with a N56U as I needed an extra LAN port.

The internet works fine but the device isn’t being issued a IPv6 WAN address evn though the N56U can grab IPv6 DNS servers.








Other settings tried but that didn’t work
IPv6 Connection Type: Native DHCPv6
Get WAN IPv6 Address From Source: DHCPv6 IA-NA