Hi all, I've tried about everything I can to fix this issue, but nothing seems to work, so asking for the forum's help.

I am in Japan, I use a 10 gig MAP-E(OCN) connection type, and I have experimented with several IPV6 settings, all of which seems to end up the same way. I also re-seated all of my cables from the ONU to the router and from the fiber to the ONU itself... So any help or clue would be greatly appreciated. Thanks in advance.

Here's a partial system log form the last time it happened about 15 mins ago:

2026-03-13 16:45:51 ICMPV6 INFO [30239] send advertisement(RA) with prefix 2400:4052:9a63:da00::/64 and mtu
2026-03-13 16:45:50 ICMPV6 INFO [30239] receive solicit(RS) from fe80::1060:6d:a6a0:7594
2026-03-13 16:45:30 Parental Controls INFO [500] Service start
2026-03-13 16:45:30 Parental Controls INFO [500] Function enabled
2026-03-13 16:45:29 QoS INFO [1372] Service start
2026-03-13 16:45:29 Parental Controls INFO [500] Service stop
2026-03-13 16:45:29 Parental Controls INFO [500] Function disabled
2026-03-13 16:45:28 QoS INFO [1372] Function enabled
2026-03-13 16:45:28 QoS INFO [1372] Service stop
2026-03-13 16:45:27 UPnP INFO [1284] Service stop
2026-03-13 16:45:26 NAT INFO [456] Initialization succeeded
2026-03-13 16:45:26 Remote Management INFO [886] Service stop
2026-03-13 16:45:26 NAT INFO [456] Initialization succeeded
2026-03-13 16:45:24 DHCPC INFO [26954] teardown and release
2026-03-13 16:45:22 Led Controller INFO [20409] Start to run INET_UP
2026-03-13 16:45:04 Remote Management INFO [30922] Service stop
2026-03-13 16:45:03 NAT INFO [30140] Initialization succeeded
2026-03-13 16:45:03 NAT INFO [30140] Initialization succeeded
2026-03-13 16:45:01 Remote Management INFO [29770] Service stop
2026-03-13 16:45:01 NAT INFO [28457] Initialization succeeded
2026-03-13 16:45:00 NAT INFO [28457] Initialization succeeded
2026-03-13 16:45:00 DHCPC INFO [26954] send discover with ip 0.0.0.0 and flags 0
2026-03-13 16:44:59 DHCP6C INFO [28213] receive reply from server with ipv6 and dns 2404:1a8:7f01:a::32404:1a8:7f01:b::3
2026-03-13 16:44:59 DHCP6C INFO [28213] send request to server with ipv6 and dns
2026-03-13 16:44:58 DHCP6C INFO [28213] receive advertise with ipv6 and dns
2026-03-13 16:44:58 DHCP6C INFO [28213] send solicit with DUID 00:03:00:01:a8:6e:84:86:ba:67 and IAID 1
2026-03-13 16:44:57 DHCPC INFO [26954] send discover with ip 0.0.0.0 and flags 0
2026-03-13 16:44:56 DHCP6C NOTICE [8491] send dhcpv6 release to ff02::1:2%eth4
2026-03-13 16:44:55 NAT INFO [27298] Initialization succeeded
2026-03-13 16:44:55 Led Controller INFO [20409] Start to run INET_OFF
2026-03-13 16:44:55 NAT INFO [27298] Initialization succeeded
2026-03-13 16:44:53 DHCPC INFO [26954] send discover with ip 0.0.0.0 and flags 0
2026-03-13 16:44:52 DHCP6C NOTICE [8491] send dhcpv6 release to ff02::1:2%eth4
2026-03-13 16:44:51 NAT INFO [25771] Initialization succeeded
2026-03-13 16:44:51 NAT INFO [25771] Initialization succeeded
2026-03-13 16:44:51 Led Controller INFO [20409] Start to run INET_OFF
2026-03-13 16:44:51 Parental Controls INFO [25839] Service start
2026-03-13 16:44:50 Parental Controls INFO [25839] Function enabled
2026-03-13 16:44:50 DHCP6C NOTICE [8491] send dhcpv6 release to ff02::1:2%eth4
2026-03-13 16:44:50 Parental Controls INFO [25839] Service stop
2026-03-13 16:44:50 Parental Controls INFO [25839] Function disabled
2026-03-13 16:44:49 DHCP6C INFO [8491] release manually
2026-03-13 16:44:49 DHCP6C NOTICE [8491] send dhcpv6 release to ff02::1:2%eth4