routeros LTE 接口获取 IPv6 地址问题

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运行 routeros 7.14.3（X86）的一台工控机上安装了电信手机卡和华为 me909s-821 模块，开机后 LTE 接口自动识别并获取到了 IPv4 地址，但是尝试通过 DHCPv6 Client 获取 IPv6 地址没有成功。执行 AT 命令进行查询：

[admin@MikroTik] /interface/lte> at-chat lte1 input="AT^NDISSTATQRY?"          
  output: ^NDISSTATQRY: 1,,,"IPV4",1,,,"IPV6"
          OK

[admin@MikroTik] /interface/lte> at-chat lte1 input="AT^DHCPV6?"
  output: ^DHCPV6: 240e:40c:8500:65cb:5a2c:80ff:1234:5678,::,::,::,240e:41:c000:ffff::,240e:41:c900:ffff::,150000000,150000000
          OK

看起来模块已经正确获取到了 IPv6 地址（后 8 位已编辑）和 DNS。通过 routeros 日志抓取的部分信息如下：

983	2024-05-30 17:54:07	memory	lte, async, raw	lte1: rcvd +COPS: 0,0,"CHN-CT",7	
984	2024-05-30 17:54:10	memory	lte, async	lte1: sent AT^NDISDUP=1,1,"ctlte"	
985	2024-05-30 17:54:10	memory	lte, async	lte1: rcvd OK	
986	2024-05-30 17:54:10	memory	lte, async, event	lte1: ^NDISSTAT: 1,,,"IPV4"	
987	2024-05-30 17:54:10	memory	lte, debug	lte1: dhcp renew	
988	2024-05-30 17:54:10	memory	interface, info	lte1 link up	
989	2024-05-30 17:54:10	memory	lte, async, event	lte1: ^NDISSTAT: 1,,,"IPV6"	
990	2024-05-30 17:54:10	memory	interface, info	lte1 detect UNKNOWN	
991	2024-05-30 17:54:10	memory	interface, info	lte1 link down	
992	2024-05-30 17:54:10	memory	lte, async	lte1: sent AT+CPMS?	
993	2024-05-30 17:54:10	memory	interface, info	lte1 link up	
994	2024-05-30 17:54:10	memory	interface, info	lte1 detect UNKNOWN	
995	2024-05-30 17:54:10	memory	lte, async	lte1: rcvd +CPMS: "SM",0,40,"SM",0,40,"SM",0,40	
996	2024-05-30 17:54:10	memory	lte, async	lte1: sent AT+CMGL=4	
997	2024-05-30 17:54:10	memory	lte, async	lte1: rcvd	
998	2024-05-30 17:54:12	memory	dhcp, info	dhcp-client on lte1 got IP address 100.94.180.235	
999	2024-05-30 17:54:16	memory	interface, info	lte1 detect INTERNET

routeros dhcp6-client 配置：

[admin@MikroTik] /interface/lte> /ipv6/dhcp-client/print detail
 1    interface=lte1 status=searching... duid="0x00030001021e101f0000" dhcp-server-v6=:: request=address add-default-route=yes default-route-distance=2 use-peer-dns=no use-interface-duid=yes dhcp-options=""pool-name="test"pool-prefix-length=64 prefix-hint=::/0 dhcp-options=""

恳请大佬指点~

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