Quote from: meyergru on Today at 02:48:05 PMThe provider test is crap, for me, it shows "OPALTELECOM-AS TalkTalk Communications Limited, GB", while I am in Germany.
If you still use the parameter in Firefox, the test should probably fail, because that setting essentially disables IPv6.
There were several changes in 26.1.6 for IPv6. If you only did an 26.1.6 -> 26.1.6_2 upgrade, everything should work.
What do you mean by "the DNS server is the upstream router"? Do you use a router-behind-router setup, do you mean the ISP router or your OpnSense? If so, its IPv4 or IPv6 address? Please be more specific.