How can I overwrite PON WAN setting created by the OLT ?

[TDAD68]

Hello.

Currently I have DFP-34X-2C2 and it's connected to internet.

However, I have one issue that I can't change IP protcol that on the PON WAN setting due to this setting is created by the OLT.

My ISP provide IPv6 as well but somehow they didn't set IPv6 as a IP protocol.

if anyone know the solution then much appreciated.

[Anime4000]

try use SFU type firmware (bridge) and VLAN it on your router