[Mr.FlowTastiX]

Hiya guys

I've used to have dd-wrt not so long ago for quite a while,
but everytime ive been looking for a solution on my IPv6 connection,
i've been switching between dd-wrt build from beta's to Kong's build,
but none really gave me the connection i wanted and the correct
forwarding to my other device's.
Ill be honest and i dont like using Tunnels, that you register on the webpage
to get the ip's.

I prefer the ussual IPv6 over PPPoE connection Static from ISP
or prefix DHCPv6 it doesnt really matter, but getting the IPv6 on
my router and dd-wrt isn't the problem im alwayse gettin the IPv6,
but its not forwarding properly to my connected device's,
i really would like to switch back to dd-wrt cause my bufferbloat is fixed
when using dd-wrt and alot of other issue's are fixed,
now i'm using the regular factory firmware, cause im getting the IPv6
forwarded with less settings config,but less smooth connection then dd-wrt.

If any of you guys could provide me some help on how to get this correctly
or do i miss anything about the settings, i dont like to renew or fiddling the
settings everyday after it changes everytime, looking for a steady ipv6 connection,
that keeps all my device's up to date.
Thanks for reading and hopefully somebody has a solution for this.

[Per Yngve Berg]

Have you set DHCPv6 with Prefix Delegation and the correct prefix length for your isp?

You should see a ipv6 address at the right top corner of the router's GUI.

For Dhcp6c config:

[Mr.FlowTastiX]

I tryed doing this with the config you said changing to ppp0
doenst give me any result the router is getting the Ipv6 but its not forwarding properly
im also having NAT Issue's, my Nat is open, but on xbox one its gives my service issue,
for Sociaal and gaming, i'm using uPnP and static ip for xbox one
only getting connected with Ipv4 with service issue,
aswel on my pc no Ipv6 givin, i tryed rebooting the router or changing Routing to Gateway or Rip Routing
nothing really works tryed Auto Dhcp and PPPoE connection neither those work for me
i dont change alot at the setting when i first come in DHCP, if i change firmware the setting stay the same
as what i used for the stock firm, but then without the Ipv6 forwarding and Nat Issue's what i did not get
on stock firm, only issue that is fixed for me is the bufferbload with using HTB/Codel.
ill show screenshot of my used interface's, and reply me if you need any other information of the settings
i have now, thanks .

[Mr.FlowTastiX]

This is a image of my port forwarding on my modem,
my router static ip is 192.168.0.13
and uses DHCP for 192.168.1.1 - 192.168.1.125