TP-Link Data Model and IPv6

Can anyone tell me where I can find the Data Model for TP-Link devices? More specifically the EC220-G5.
I need the parameters of IPv6, if they exist.
Thank you if anyone can help me.

Datamodels normally are not published by any brand AFAIK. Try to search if any user were uploaded it on internet.

Another way is adopt this CPE in the ACS server, read all paths from it and then try to find your desired value.