路由器IPv6混杂端口无状态地址分配的异常现象

路由器型号：RT-MSR830-6BHI

软件版本：version 7.1.064, Release 6749P2102

接在混杂端口的设备获取到了带tag vlan 的无状态分配分配地址，DHCPv6有状态地址分配则正常，用pc检查获取到的地址如下图：

路由器通过pppoe从运营商获取v6前缀，前缀长度60，内部网络中有二个vlan需要使用到ipv6地址，分别用于类似ap管理和其他承载应用业务，物理线路连接于混杂模式端口，相关配置如下：

ipv6 dhcp pool lan1
 network prefix 11 0:0:0:F::/64 preferred-lifetime 60 valid-lifetime 180
 option-group 11
#
ipv6 dhcp pool lan13
 network prefix 11 0:0:0:D::/64 preferred-lifetime 60 valid-lifetime 180
 option-group 11
#
interface Dialer11
 mtu 1492
 ppp chap password cipher $c$3$548292oh6HQz312MbfbzwhDfRvQS4QoDG0mZ
 ppp chap user user12345
 ppp ipcp dns admit-any
 ppp ipcp dns request
 ppp pap local-user user12345 password cipher $c$3$+z2td0451i5ArcsdE2b2tHghSWGcBM3Pizmg
 dialer bundle enable
 dialer-group 11
 dialer timer idle 0
 dialer timer autodial 5
 ip address ppp-negotiate
 tcp mss 1452
 ip urpf strict allow-default-route
 nat outbound
 ipv6 address auto
 ipv6 address auto link-local
 ipv6 urpf strict allow-default-route
 ipv6 dhcp client pd 11 rapid-commit option-group 11
#
interface Vlan-interface1
 description LAN-interface
 ip address 192.168.8.5 255.255.255.0
 arp send-gratuitous-arp interval 5000
 ip urpf strict
 attack-defense apply policy lan
 dhcp server apply ip-pool lan1
 ipv6 dhcp select server
 ipv6 dhcp server apply pool lan1
 ipv6 address FE80::1:5 link-local
 ipv6 address 11 ::F:0:0:1:1/64
 ipv6 urpf strict
 ipv6 nd autoconfig managed-address-flag
 ipv6 nd autoconfig other-flag
 undo ipv6 nd ra halt
 ipv6 nd ra interval 20 5
#
interface Vlan-interface13
 description ipv4 and ipv6
 ip address 192.168.13.5 255.255.255.0
 arp send-gratuitous-arp interval 5000
 ip urpf strict
 attack-defense apply policy lan
 dhcp server apply ip-pool lan13
 ipv6 dhcp select server
 ipv6 dhcp server apply pool lan13
 ipv6 address FE80::13:5 link-local
 ipv6 address 11 ::D:0:0:13:1/64
 ipv6 urpf strict
 ipv6 nd autoconfig managed-address-flag
 ipv6 nd autoconfig other-flag
 undo ipv6 nd ra halt
 ipv6 nd ra interval 20 5
#
interface GigabitEthernet0/2
 port link-mode bridge
 port link-type hybrid
 port hybrid vlan 12 to 13 tagged
 port hybrid vlan 1 untagged