Since 2 days I found that DNS-over-TLS/QUIC does not work properly. The DNS resolver is green and during the day it changes to red (with Cloudflare as the resolver) or even black even with IP linked properly.
FYI I am using NextDNS configuration file on my iPhone 13 Pro Max iOS 15.5.
Also, it seems I get more reliability when using DNS-over-HTTP.
Thanks for your help.
Yep same here, our r/FritzBox router has the same disconnections, already since 6 days.
If that happens, DoT traffic falls back to unencrypted servers...
if I do a ping.nextdns.io times are not showing issues.
Could have to do with IPv6, NextDNS server-park upgrades...
This is a linux testresult, only showing IPv4 for some unknown reason: https://nextdns.io/diag/18e11160-f100-11ec-a1e2-1df0901919df