Messages

- Under "Services/Router Advertisements/LAN", set the DNS server to the full ULA of your Adguard DNS server,

I've nearly the same setup, thank you for sharing this steps. So I could compare and know, that my setup is valid. But one question: Make it a difference, if I activate in "Services/Router Advertisements/LAN" the DNS option "Use the DNS configuration of the DHCPv6 server" instead of enter the IPv6 of the Adguard DNS Server? The advantage of mine maybe, that there's only one location to configure the custom DNS server.

[/var RAM disk]

Do you have /var RAM disk and /tmp RAM disk settings active? If yes, all files below this directories fillup the memory including swap. I had the same issue after switch from 21.7 to 22.1: Over time the memory fills up until the OPNsense doesn't react on anything and had to be hard reseted.

My investigations showed, that many log files were stored und this the memory filled up. I reconfigured System -> Settings -> Logging -> Preserve logs (Days) to 3 and changed the Log level verbosity of Unbound to 1. Now the memory usage keeps below 50% and OPNsense is working without any problem over weeks.