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DNS over TLS (Private DNS) on Android suddenly stopped working overnight

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Grafter
Posts: 43
Thanks: 6
Fixes: 2
Registered: ‎30-05-2010

DNS over TLS (Private DNS) on Android suddenly stopped working overnight

DNS over TLS (Private DNS) on Android suddenly stopped working overnight when connected via WiFi. This works fine when connected using Mobile data on the 3 network. Has something been changed or blocked at the Plusnet ISP level? I have confirmed this using both Cloudflare and NextDNS. I rebooted my router to rule that out. Please can someone else try setting up private DNS on Android 9 or higher using 1dot1dot1dot1.cloudflare-dns.com to confirm this is a widespread issue?