How to configure dhcpv6 client to get ipv6 address?

[dopamine]

Hello，everyone!
My PVE host can get an ipv6 address of SLAAC. I want to get another ipv6 address from dhcpv6 server that runs on my Openwrt router. How to I configure the network to get two ipv6 address, one through SLAAC, the other is assighed by dhcpv6 server?
Here is my /etc/network/interfaces, which did not work.

auto lo
iface lo inet loopback
iface lo inet6 loopback
## LAN
iface enp1s0 inet manual
iface enp1s0 inet6 manual
## WAN
iface enp2s0 inet manual
iface enp2s0 inet6 manual

## LAN
auto vmbr0 vmbr0:1 vmbr0:2 vmbr0:3
#auto vmbr0
iface vmbr0 inet manual
        bridge-ports enp1s0
        bridge-stp off
        bridge-fd 0
#auto vmbr0:1
iface vmbr0:1 inet static
        address 192.168.8.254
        netmask 255.255.255.0
        gateway 192.168.8.1
#auto vmbr0:2
iface vmbr0:2 inet static
        address 192.168.0.1
        netmask 255.255.255.0

## ipv6
auto vmbr0:10
iface vmbr0:10 inet6 static
        pre-up modprobe ipv6
        address fd00::254
        netmask 64
auto vmbr0:20
allow-hotplug vmbr0:20
#iface vmbr0:20 inet6 dhcp
iface vmbr0:20 inet6 auto
        pre-up modprobe ipv6
        up echo 0 > /proc/sys/net/ipv6/conf/$IFACE/disable_ipv6
        up sleep 5
        autoconf 1
        accept_ra 2
        dhcp 1

## WAN
auto vmbr1
iface vmbr1 inet manual
        bridge-ports enp2s0
        bridge-stp off
        bridge-fd 0

Thank you.

 

[archerious]

Same here/