ipv6拨号掉线之后就不能再连接了

MidnightSong

使用的是【2020-12-01 更新】 N1盒子 Openwrt 固件,支持写入EMMC！ - 斐讯无线路由器以及其它斐迅网络设备 - 恩山无线论坛 - Powered by Discuz! (right.com.cn)这位大佬编译的固件，具体问题是这样的
     我根据网上的教程，创建了一个DHCPv6的接口，并指向@WAN，防火墙什么的也设置好了，正常获取到了ipv6公网地址，一切正常。但是大概24小时的样子，拨号就会断开，并且手动重连也没有任何作用，重启N1之后就正常了，以下是日志，希望有大佬帮小弟解答以下。

20:44:02 2020 daemon.info pppd[3304]: Connect time 2879.1 minutes.
Sun Dec  6 20:44:02 2020 daemon.info pppd[3304]: Sent 596882338 bytes, received 3359783588 bytes.
Sun Dec  6 20:44:02 2020 user.err wsdd2[6854]: error: wsdd-mcast-v4: wsd_send_soap_msg: send
Sun Dec  6 20:44:02 2020 daemon.err odhcp6c[8592]: Failed to send RS (No buffer space available)
Sun Dec  6 20:44:02 2020 daemon.err odhcp6c[4334]: Failed to send RS (No buffer space available)
Sun Dec  6 20:44:02 2020 daemon.notice netifd: Network device 'pppoe-WAN' link is down
Sun Dec  6 20:44:02 2020 daemon.notice netifd: Network alias 'pppoe-WAN' link is down
Sun Dec  6 20:44:02 2020 daemon.notice netifd: Interface 'WAN_6' has link connectivity loss
Sun Dec  6 20:44:02 2020 daemon.notice netifd: Interface 'ipv6' has link connectivity loss
Sun Dec  6 20:44:02 2020 daemon.notice netifd: Interface 'WAN' has lost the connection
Sun Dec  6 20:44:02 2020 daemon.notice pppd[3304]: Modem hangup
Sun Dec  6 20:44:02 2020 daemon.notice pppd[3304]: Connection terminated.
Sun Dec  6 20:44:02 2020 daemon.info pppd[3304]: Connect time 2879.1 minutes.
Sun Dec  6 20:44:02 2020 daemon.info pppd[3304]: Sent 596882338 bytes, received 3359783588 bytes.
Sun Dec  6 20:44:02 2020 daemon.notice netifd: ipv6 (8592): Command failed: Permission denied
Sun Dec  6 20:44:02 2020 daemon.err odhcp6c[4334]: Failed to send DHCPV6 message to ff02::1:2 (Permission denied)
Sun Dec  6 20:44:02 2020 daemon.notice netifd: Interface 'WAN_6' is now down
Sun Dec  6 20:44:02 2020 daemon.info pppd[3304]: Sent PADT
Sun Dec  6 20:44:02 2020 daemon.info pppd[3304]: Exit.
Sun Dec  6 20:44:03 2020 daemon.notice netifd: Interface 'WAN' is now down
Sun Dec  6 20:44:03 2020 kern.info kernel: [172769.819576] meson8b-dwmac c9410000.ethernet eth0: Link is Down
Sun Dec  6 20:44:03 2020 daemon.info avahi-daemon[3043]: Interface eth0.IPv6 no longer relevant for mDNS.
Sun Dec  6 20:44:03 2020 daemon.info avahi-daemon[3043]: Leaving mDNS multicast group on interface eth0.IPv6 with address 240e:338:2420:2ab0::1.
Sun Dec  6 20:44:03 2020 daemon.notice netifd: Interface 'lan' is disabled
Sun Dec  6 20:44:03 2020 daemon.notice netifd: Interface 'lan' is now down
Sun Dec  6 20:44:03 2020 daemon.info avahi-daemon[3043]: Interface eth0.IPv4 no longer relevant for mDNS.
Sun Dec  6 20:44:03 2020 daemon.info avahi-daemon[3043]: Leaving mDNS multicast group on interface eth0.IPv4 with address 192.168.10.1.
Sun Dec  6 20:44:03 2020 daemon.info avahi-daemon[3043]: Withdrawing address record for 240e:338:2420:2ab0::1 on eth0.
Sun Dec  6 20:44:03 2020 daemon.info avahi-daemon[3043]: Withdrawing address record for 192.168.10.1 on eth0.
Sun Dec  6 20:44:03 2020 daemon.err odhcp6c[8592]: Failed to send DHCPV6 message to ff02::1:2 (Permission denied)
Sun Dec  6 20:44:03 2020 kern.info kernel: [172770.002420] meson8b-dwmac c9410000.ethernet eth0: PHY [0.2009087f:00] driver [RTL8211F Gigabit Ethernet]
Sun Dec  6 20:44:03 2020 kern.info kernel: [172770.051627] meson8b-dwmac c9410000.ethernet eth0: No Safety Features support found
Sun Dec  6 20:44:03 2020 kern.warn kernel: [172770.053990] meson8b-dwmac c9410000.ethernet eth0: PTP not supported by HW
Sun Dec  6 20:44:03 2020 kern.info kernel: [172770.060531] meson8b-dwmac c9410000.ethernet eth0: configuring for phy/rgmii link mode
Sun Dec  6 20:44:03 2020 daemon.info avahi-daemon[3043]: Joining mDNS multicast group on interface eth0.IPv6 with address 240e:338:2420:2ab0::1.
Sun Dec  6 20:44:03 2020 daemon.info avahi-daemon[3043]: New relevant interface eth0.IPv6 for mDNS.
Sun Dec  6 20:44:03 2020 daemon.notice netifd: Interface 'lan' is enabled
Sun Dec  6 20:44:03 2020 daemon.info avahi-daemon[3043]: Registering new address record for 240e:338:2420:2ab0::1 on eth0.*.
Sun Dec  6 20:44:03 2020 daemon.notice netifd: Interface 'lan' is setting up now
Sun Dec  6 20:44:03 2020 daemon.info avahi-daemon[3043]: Joining mDNS multicast group on interface eth0.IPv4 with address 192.168.10.1.
Sun Dec  6 20:44:03 2020 daemon.info avahi-daemon[3043]: New relevant interface eth0.IPv4 for mDNS.
Sun Dec  6 20:44:03 2020 daemon.info avahi-daemon[3043]: Registering new address record for 192.168.10.1 on eth0.IPv4.
Sun Dec  6 20:44:03 2020 daemon.notice netifd: Interface 'lan' is now up
Sun Dec  6 20:44:03 2020 daemon.notice netifd: Interface 'WAN' is disabled
Sun Dec  6 20:44:03 2020 daemon.notice netifd: Interface 'ipv6' is now down
Sun Dec  6 20:44:03 2020 daemon.notice netifd: Interface 'ipv6' is disabled
Sun Dec  6 20:44:03 2020 daemon.notice netifd: Network device 'eth0' link is down
Sun Dec  6 20:44:03 2020 daemon.notice netifd: Interface 'lan' has link connectivity loss
Sun Dec  6 20:44:03 2020 daemon.notice netifd: Interface 'WAN' has link connectivity loss
Sun Dec  6 20:44:04 2020 daemon.err odhcpd[1746]: Failed to send to ff02::1%lan@eth0 (Permission denied)
Sun Dec  6 20:44:06 2020 kern.info kernel: [172773.047564] meson8b-dwmac c9410000.ethernet eth0: Link is Up - 1Gbps/Full - flow control rx

MidnightSong

人呢？求大佬看一眼哇