All devices connected to the LAN port cannot obtain IPv6 address

[chendajun000104]

I am using an x86 device that has 2 physical network ports. I have tried different versions of OpenWRT images and have encountered this issue. Is there any problem with my configuration?

This is the overview page of the router：

Here are the /etc/config/network files and /etc/config/dhcp files:

And the /tmp/dhcp.leases file：

And ifconfig:

[timur.davletshin]

Probably those devices don't support DHCPv6 but rather SLAAC...

[chendajun000104]

But on my other router, they are working properly and using dhcpv6. This is very confusing for me.

[timur.davletshin]

I see your br-lan having only ULA address. Do you actually receive PD?

[chendajun000104]

This is a screenshot after resetting the system, I haven't logged into my broadband account yet. Now I have solved the problem. As you said, my Android device does not support dhcpv6, and after resetting the network adapter of my Windows device, it successfully obtained an IPv6 address through dhcpv6. Thank you for your help.