我的MSR3610-X1路由器突然获取不到IPv6前缀了

我的MSR3610-X1路由器突然获取不到IPv6前缀了，以前是可以的，查看debug发现是客户端尝试发送报文失败，错误代码为 1，请问这该怎么解决?

<H3C>*Mar 16 17:19:03:563 2024 H3C DHCPC6/7/EVENT: Forming Solicit, 530010 ms elapsed.

*Mar 16 17:19:03:564 2024 H3C DHCPC6/7/PACKET: 

Dialer1,Packet sent:

Type Solicit (1)

Transaction-id: 0x9d880c

Option               Length  Information

CLIENTID(1)          10      0003000138ad8eb83c1c

IA_PD(25)            12      IAID: 0x00000001

                             T1: 0

                             T2: 0

ORO(6)               12      DOMAIN_LIST(24)

                             DNS_SERVERS(23)

                             SIP_SERVER_A(22)

                             AC-LIST(52)

                             AFTR-NAME(64)

                             SIP_SERVER_D(21)

ELAPSED_TIME(8)      2       53001 centisecond(s)

*Mar 16 17:19:03:565 2024 H3C DHCPC6/7/ERROR: Failed to send a packet. Socket ID: 16 error 1.

光猫直连路由器采用PPPoE拨号，这是拨号口配置：

• #
• interface Dialer1
• bandwidth 1000000
• mtu 1492
• ppp chap password cipher ******
• ppp chap user ******
• ppp ipcp dns admit-any 
• ppp ipcp dns request 
• ppp pap local-user ****** password cipher ******  
• dialer bundle enable
• dialer-group 2
• dialer timer idle 0
• dialer timer autodial 5
• ip address ppp-negotiate
• tcp mss 1452
• qos reserved-bandwidth pct 100
• qos lr outbound cir 1000000 cbs 62500000 ebs 0 
• qos apply policy greenChannelPolicy_17415_I inbound
• qos apply policy greenChannelPolicy_18929 outbound
• nat outbound
• ipv6 address auto
• ipv6 address auto link-local
• ipv6 dhcp client pd 1 rapid-commit option-group 1
• #