dropping internet last few days

[dcol]

I have been experiencing intermittent internet loss. not sure if it is the firewall. I did have some errors at the same time this happened today in the OPNsense log. Does this point to anything? I am on the latest OPNsense version.

2023-10-23T16:24:35-07:00   Error   api   no active session, user not found   
2023-10-23T16:18:34-07:00   Error   configd.py   [872b9217-6625-4f0b-9e90-f1e42cc38724] Script action failed with Command '/usr/local/opnsense/scripts/firmware/query.sh remote ' returned non-zero exit status 1. at Traceback (most recent call last): File "/usr/local/opnsense/service/modules/actions/script_output.py", line 44, in execute subprocess.check_call(script_command, env=self.config_environment, shell=True, File "/usr/local/lib/python3.9/subprocess.py", line 373, in check_call raise CalledProcessError(retcode, cmd) subprocess.CalledProcessError: Command '/usr/local/opnsense/scripts/firmware/query.sh remote ' returned non-zero exit status 1.   
2023-10-23T16:18:34-07:00   Error   configd.py   Timeout (120) executing : firmware tiers   

Also the general log shows this
2023-10-23T16:24:29-07:00   Error   opnsense   /usr/local/etc/rc.newwanip: The command '/bin/kill -'TERM' '57694''(pid:/var/run/unbound.pid) returned exit code '1', the output was 'kill: 57694: No such process'   
2023-10-23T16:24:23-07:00   Error   dhcp6c   transmit failed: Can't assign requested address   
2023-10-23T16:24:23-07:00   Warning   opnsense   /usr/local/etc/rc.bootup: dhcpd_radvd_configure(auto) found no suitable IPv6 address on lan(ixl0)   
2023-10-23T16:22:14-07:00   Error   opnsense   /usr/local/etc/rc.newwanipv6: The command '/bin/kill -'TERM' '76961''(pid:/var/dhcpd/var/run/dhcpdv6.pid) returned exit code '1', the output was 'kill: 76961: No such process'   
2023-10-23T16:19:22-07:00   Warning   opnsense   /usr/local/etc/rc.linkup: dhcpd_radvd_configure(auto) found no suitable IPv6 address on lan(ixl0)   
2023-10-23T16:18:53-07:00   Error   dhcp6c   transmit failed: Network is down   
2023-10-23T16:18:37-07:00   Error   dhcp6c   transmit failed: Network is down   
2023-10-23T16:18:36-07:00   Error   dhcp6c   transmit failed: Network is down   
2023-10-23T16:18:35-07:00   Error   dhcp6c   transmit failed: Network is down   
2023-10-23T16:18:29-07:00   Error   dhcp6c   transmit failed: Network is down   
2023-10-23T16:18:28-07:00   Error   dhcp6c   transmit failed: Network is down   
2023-10-23T16:18:28-07:00   Error   dhcp6c   transmit failed: Network is down   
2023-10-23T16:18:25-07:00   Error   dhcp6c   transmit failed: Network is down   
2023-10-23T16:18:24-07:00   Error   dhcp6c   transmit failed: Network is down   
2023-10-23T16:18:24-07:00   Error   dhcp6c   transmit failed: Network is down   
2023-10-23T16:18:23-07:00   Error   dhcp6c   transmit failed: Network is down   
2023-10-23T16:18:22-07:00   Error   dhcp6c   transmit failed: Network is down   
2023-10-23T16:18:22-07:00   Error   dhcp6c   transmit failed: Network is down

I am running 2 WAN's in the OPNsense box. Only one WAN died. The ISP said there was no outage.
Problem happens once a day. Problem always points to dhcp6. the WAN that works only uses IPv4. Should I disable IPv6 on the problem LAN? I am using Prefix delegation size of 64. Is that a problem. ISP is Cox

Any help is appreciated.

[CJ]

Turn on gateway monitoring so that you can see more detail regarding your connection.

ISPs are horrible at troubleshooting intermittent issues.  It won't show up in their system so of course they'll tell you there's no outage.

Since you're on cable my first instinct would be line noise but that would affect IPv4 as well.  I think your problem is related to the fact that Cox seems to be rubbish when it comes to IPv6.  Someone else was having problems with them and IPv6 but I don't know if it's related to your issue.  https://github.com/opnsense/core/issues/6884