How to manually setting Br-LAN ipv6 default gateway to my router?

Installing and Using OpenWrt Network and Wireless Configuration
1

Unlike Ipv4, the Ipv6 gateway setting isn't an option in the LAN setting interface, I found my Br-LAN downstream devices use the link-local related address to be ipv6 default gateway, how do I set the ipv6 default gateway to be my router for br-lan downstream devices?

Connection-specific DNS Suffix: lan
Description: Intel(R) Wi-Fi 6E AX210 160MHz
Physical Address: 
DHCP Enabled: Yes
IPv4 Address: 192.168.1.102
IPv4 Subnet Mask: 255.255.255.0
Lease Obtained: Sunday, March 20, 2022 5:30:41 PM
Lease Expires: Wednesday, March 23, 2022 7:59:43 PM
IPv4 Default Gateway: 192.168.1.1
IPv4 DHCP Server: 192.168.1.1
IPv4 DNS Server: 192.168.1.1
IPv4 WINS Server: 
NetBIOS over Tcpip Enabled: Yes
IPv6 Address: 240e:390:802:3ae0::a9f
Lease Obtained: Tuesday, March 22, 2022 4:35:19 PM
Lease Expires: Wednesday, March 23, 2022 10:35:19 PM, 240e:390:802:3ae0:8567:b821:4f24:77c0
Temporary IPv6 Address: 240e:390:802:3ae0:1d62:7e16:f8de:f47e
Temporary IPv6 Address: 240e:390:802:3ae0:e418:b1ca:4702:15fe
Link-local IPv6 Address: fe80::8567:b821:4f24:77c0%23
IPv6 Default Gateway: fe80::2e2:69ff:fe24:7a04%23
IPv6 DNS Server: 240e:390:802:3ae0::1
2

Why is this a problem? Gateway in IPv6 works fine with LL addresses.

3

Proxy plugin upon Br-Lan is involved to control downstream devices, so I need to set the router as the default gateway, like the DNS server.

4

You can set the LL address, not an issue. Don't neglect to specify the interface, the %23 part.

5

Sorry, I don't know what to do. Would you mind telling me the details?

6

If LL addresses seem complicated to you, you can also use the ULA addresses that OpenWrt is distributing by default alongside the GUA.

7

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