Ipv6 local ula dumbap

[xize]

Hello,

Since some of my IOT now started to enforce ipv6 on their matter protocol I'm having some issues understanding implementing them over an dumbap.

From what I readed is that I can accomplish this via the local ula, so I have setup my aqara interface like:

this is my main router:

config interface 'aqaranet'
        option proto 'static'
        option device 'br-lan.178'
        option ipaddr '10.233.10.1'
        option netmask '255.255.255.0'
        option defaultroute '0'
        option ip6assign '64'
        list ip6class 'local'

and dhcp:

config dhcp 'aqaranet'
        option interface 'aqaranet'
        option start '2'
        option limit '150'
        option leasetime '12h'
        option ra_useleasetime '1'

so far I can see my local ula here fine.

on my dumbap here is where I get confused... probably due to my lack of knowledge for ula itself:

if I create an instance with protocol dhcpv6 I do see my ula from the upstream router, but don't want that, instead I want it on my ipv4 aqara interface, I can get my local ula to show here but I think that is wrong, the reason I want it on the ipv4 interface is because of wireless and some devices still use ipv4, for ipv6/matter internet is not a requirement so that is why I choose for the ula.

so... does the local ula from dumbap direct to the upstream ipv6?, I tried to ping it but it fails, I did not attempt to recreate the dhcpv6 should I recreate it like a wan6 interface?

here is my config:

config interface 'aqara'
        option proto 'dhcp'
        option device 'br-lan.178'
        option defaultroute '0'
        option delegate '0'
        option ip6assign '64'

dhcp:

config dhcp 'aqara'
        option interface 'aqara'
        option ra 'relay'
        option dhcpv6 'relay'

what also confuses me, is that what I can find is that option ra has to be set to server, but in luci it is greyed out but no reason to why

both routers are Flint 2.

[mk24]

A bridged ("dumb") AP merely sends all L3 packets v4 or v6 unchanged up to the main router. It doesn't need to hold an IP address at all other than to be able to log into it for administration.

[xize]

Thank you!, I just realized I was making it very complicated

with some small changes to my main router:

config interface 'aqaranet'
        option proto 'static'
        option device 'br-lan.178'
        option ipaddr '10.233.10.1'
        option netmask '255.255.255.0'
        option ip6assign '64'

^ I removed a few things here like prefix selected to ula

and dhcp:

config dhcp 'aqaranet'
        option interface 'aqaranet'
        option start '2'
        option limit '150'
        option leasetime '12h'
        option ra_useleasetime '1'
        option ra 'server'
        option dhcpv6 'relay'
        option ra_default '1'

I had to uncheck designated master and prefix filter in order to have server to appear in luci

on my dumbap setting protocol to unmanaged fixed it