Orbi RBR50 IPv6 connection type

[Fortunatum]

How can I connect modem-Motorola MB8600 with router Orbi RBR50 using internet protocol IPv6?
My ISP uses a dual stack transition method that enable IPv4 and IPv6 host to communicate with each other. This enable Cox to process either IPv4 or IPv6 traffic at the same time.
I’m using modem Motorola MB8600 and router Orbi RBR50, both are capable for both technologies.
My question is which of these IPv6 routing options is best under my circumstances:
Auto Detect
Auto Config
6to4 Tunnel
6rd
Pass Through
Fixed
DHCP
PPPoE

[plemans]

Did you try the auto-detect?

[Fortunatum]

I tried both Auto Detect and Auto Config but got a lot of disconnect issues. Just looking for an educated answer to the problem. I will return my Orbi otherwise and try a more reliable brand.

[plemans]

Do you run into issues directly wired into the modem with a pc?

Did you contact cox to find out their ipv6 settings? (I don't have cox to do so)

https://www.cox.com/residential/support/ip-version-6.html