Ubuntu dhcpd[]：发送包6:错误的文件描述符

我在ubuntu上配置了一个dhcpv6服务器。我根据接口ID为每个客户端定义了静态绑定。 但当客户端请求时，DHCPv6服务器上的分配失败。 “dhcpd[122762]：发送包6:错误的文件描述符”

----在dhcpv6服务器上配置----

----系统日志消息----

---

用于dhcpv6服务器的接口也有子接口，这些子接口正用于其他一些功能

删除子接口后，分配成功

---

这看起来像是一个限制/错误，但找不到任何文档。

用于dhcpv6服务器的接口也有子接口，用于其他一些功能

删除子接口后，分配成功

这看起来像是一个限制/错误，但找不到任何文档

subnet6 2404:e801:1014::/48 {
    host client-name-2404.e801.1014.5 {
        host-identifier option dhcp6.interface-id "OLT3923.IOT xpon 0/2/0/1:2404:e801:1014::5";
        fixed-address6 2404:e801:1014::5;
        fixed-prefix6 b1a1:3003:1014:5::/64;
    }

dhcpd[122762]: Relay-forward message from 2406:3003:1:5a::1 port 547, link address 2404:e801:1014::1, peer address fe80::244:1ff:fe00:1
dhcpd[122762]: Advertise NA: address 2404:e801:1014::5 to client with duid 00:01:00:01:26:69:f0:4b:00:44:01:00:00:01 iaid = 1 static
dhcpd[122762]: Advertise PD: address b1a1:3003:1014:5::/64 to client with duid 00:01:00:01:26:69:f0:4b:00:44:01:00:00:01 iaid = 2 static
dhcpd[122762]: Sending Relay-reply to 2406:3003:1:5a::1 port 547
dhcpd[122762]: send_packet6: Bad file descriptor
dhcpd[122762]: dhcpv6: send_packet6() sent -1 of 177 bytes
dhcpd[122762]: Relay-forward message from 2406:3003:1:5a::1 port 547, link address 2404:e801:1014::1, peer address fe80::244:1ff:fe00:1
dhcpd[122762]: Advertise NA: address 2404:e801:1014::5 to client with duid 00:01:00:01:26:69:f0:4b:00:44:01:00:00:01 iaid = 1 static
dhcpd[122762]: Advertise PD: address b1a1:3003:1014:5::/64 to client with duid 00:01:00:01:26:69:f0:4b:00:44:01:00:00:01 iaid = 2 static
dhcpd[122762]: Sending Relay-reply to 2406:3003:1:5a::1 port 547
dhcpd[122762]: send_packet6: Bad file descriptor
dhcpd[122762]: dhcpv6: send_packet6() sent -1 of 177 bytes


lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 19.10
Release:        19.10
Codename:       eoan