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24.1 Production Series / Re: Weirdness with IPv6 and DHCPv6...
« on: February 29, 2024, 08:13:45 pm »
Been having weird IPv6 issues recently, too. Noticed today that for whatever reason my OPNsense doesn't have a default IPv6 route anymore. Clients and the firewall itself (on the WAN interface) have their addresses properly assigned, but the route is missing, resulting in no connectivity. Could that be your problem aswell?
If memory serves me correctly, my problem came with the update to 24.1.2, but i don't remember exactly. I have daily config backups - is the OPNsense release version in there somewhere so that i can verify?
/e: I think i might have solved my issue, and it might be related to gateways. My IPv6 gateway existed prior to upgrading to v24 with the gateway stuff being migrated during upgrade. I had configured upstream monitoring and set one of OpenDNS's addresses as the monitoring target. I now went and removed the gateway. It got automatically recreated and the default route appeared. Added the monitoring target again and enabled gateway monitoring. So far so good, route is still there. Will see tomorrow whether this all survives a nightly reboot.
If memory serves me correctly, my problem came with the update to 24.1.2, but i don't remember exactly. I have daily config backups - is the OPNsense release version in there somewhere so that i can verify?
/e: I think i might have solved my issue, and it might be related to gateways. My IPv6 gateway existed prior to upgrading to v24 with the gateway stuff being migrated during upgrade. I had configured upstream monitoring and set one of OpenDNS's addresses as the monitoring target. I now went and removed the gateway. It got automatically recreated and the default route appeared. Added the monitoring target again and enabled gateway monitoring. So far so good, route is still there. Will see tomorrow whether this all survives a nightly reboot.