MSR810-WiNet路由器-不能正确回应dhcpv6-PD请求报文

MSR810-WiNet路由器-作为DHCPv6 server，回应DHCPv6 PD请求时，有时能正确回应，有时回应的reply报文PD option25里前缀值为空。

有没有大佬帮忙看看配置是否有问题，谢谢！

做dhcpv6 server的lan口配置

# interface GigabitEthernet0/1 

 port link-mode route 

 ip address 192.168.8.1 255.255.255.0 

 dhcp server apply ip-pool p1 

 ipv6 dhcp select server 

 ipv6 dhcp server apply pool p5_ipv6 

 ipv6 dhcp server allow-hint preference 255 rapid-commit 

 ipv6 address 3001::30/64 

 ipv6 nd autoconfig other-flag 

 ipv6 nd dad attempts 10 

 undo ipv6 nd ra halt 

 ipv6 nd ra interval 10 5 

 ipv6 nd ra router-lifetime 3600 

 ipv6 nd ra hop-limit unspecified 

 pppoe-server bind virtual-template 5 

#

其他相关配置

# ipv6 dhcp pool p5_ipv6 

 network 2005::/64 

 dns-server 2005::30 

 dns-server 240C::6666 

 domain-name system 

 prefix-pool 6 

 gateway-list 2005::2005

 #

ipv6 dhcp prefix-pool 6 prefix 2005::/64 assign-len 64

版本信息

<H3C>display version 

H3C Comware Software, Version 7.1.064, Release 0605P25 Copyright (c) 2004-2018 New H3C Technologies Co., Ltd. All rights reserved. H3C MSR810 uptime is 0 weeks, 0 days, 8 hours, 27 minutes Last reboot reason : Power on Boot image: flash:/msr810-cmw710-boot-r0605p25.bin Boot image version: 7.1.064P55, Release 0605P25