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Ultra-Low Latency Issue

I believe I’m having an issue with Ultra-Low Latency on version 2.0.1 of the app running on iOS 14.3. At random, all DNS requests stop replying (unable to ping anything). If I toggle Ultra-Low Latency off and then back on in the app, everything returns to normal.

33 replies

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    • James_G
    • 3 yrs ago
    • Reported - view

    Hi all, I would like to chime in here. I noticed today that sites are hanging up while on my wifi network. Running 2.0.1 on iOS 14.3 with “Use ultra low latency network” enabled.

    Disabling this setting, everything appears to work fine. I am connected to Google WiFi and I’ve also noticed an IOS message indicating “This network is blocking encrypted DNS” however even with this message my NextDNS logs are showing traffic as long as “Use ultra low latency network” is disabled and things are working.

    I am curious as to what toggling this setting does under the hood.  Thanks!

      • James_G
      • 3 yrs ago
      • Reported - view

      I believe I may have determined my issue. My home network level DNS is configured for OpenDNS. When I go to my iOS device settings and set Google DNS (8.8.8.8, 8.8.4.4) manually and try with NextDNS enabled and "Use ultra low latency network” enabled, I have no problems.

      I believe OpenDNS is doing something to block the functionality of the NextDNS iOS app when "Use ultra low latency network” enabled. Disabling this setting seems to work, OR changing my network-level DNS configuration from OpenDNS to another provider seems to be another solution.

      See here for potential explanation.

      • romain
      • 3 yrs ago
      • Reported - view

      James G as far as we know, OpenDNS blocking the new HTTPS qtype is not the issue, blocking the "Proxy/Anonymizer" category in OpenDNS is (it includes dns.nextdns.io). Can you try with OpenDNS but without blocking this category and report back?

      • James_G
      • 3 yrs ago
      • Reported - view

      Romain Cointepas Thank you for the suggestion, it appears you were correct. I am no longer seeing issues now, and I can see the call to ios.dns.nextdns.io succeed now in the OpenDNS logs. Thanks!

    • pancakeufo
    • 3 yrs ago
    • Reported - view

    I'm on iOS 14.3 with the latest version of the app and I am experiencing the exact same issues.
    Every day I wake up I can't load any page on my iPhone until I turn off the ultra low latency toggle.
    I'm here if you need any debugging help.

      • romain
      • 3 yrs ago
      • Reported - view

      pancakeufo Could you try without the app but with an Apple configuration profile instead (second choice in our Setup guide), and report back?

    • Guillaume_Ausset
    • 2 yrs ago
    • Reported - view

    I'm having the exact same issue since upgrading to iOS 15

    Bot disabling "Use Low Latency Network" and using the profile work.

    • Guillaume_Ausset
    • 2 yrs ago
    • Reported - view

    Actually the problems reappears after a while even after mitigation. Emphasis on the "after a while". There's a weird time dependency here.

      • Arn
      • 2 yrs ago
      • Reported - view

      Guillaume Ausset since I update to ios15 I can’t use Ultra Low Latency on iPad and iPhone

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