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    Failed to resolve DNS

    VOXL 2
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    • W
      wilkinsaf ModalAI Team
      last edited by 21 Jun 2023, 19:12

      Getting a lot of DNS errors when using the Quectel 5G hat

      here is one from tailscale

      - not logged in, last login error=fetch control key: Get "https://controlplane.tailscale.com/key?v=63": failed to resolve "controlplane.tailscale.com": no DNS fallback candidates remain for "controlplane.tailscale.com"
      

      I believe this is more of a Ubuntu issue than a modalai issue, but I thought I would track my progress here incase anyone else has issues

      1 Reply Last reply Reply Quote 0
      • W
        wilkinsaf ModalAI Team
        last edited by 21 Jun 2023, 19:22

        seems like it is coming from resolvconf program

        W 1 Reply Last reply 21 Jun 2023, 19:40 Reply Quote 0
        • W
          wilkinsaf ModalAI Team @wilkinsaf
          last edited by 21 Jun 2023, 19:40

          busybox udhcpc client might be the culprit

          https://unix.stackexchange.com/questions/174349/what-overwrites-etc-resolv-conf-on-every-boot

          T 1 Reply Last reply 21 Jun 2023, 19:48 Reply Quote 0
          • T
            tom admin @wilkinsaf
            last edited by 21 Jun 2023, 19:48

            @wilkinsaf I've had to use this script for some of the modem workflows in the past:

            https://gitlab.com/voxl-public/voxl-sdk/utilities/voxl-modem/-/blob/master/scripts/enable-dns.sh

            W 1 Reply Last reply 21 Jun 2023, 19:58 Reply Quote 0
            • W
              wilkinsaf ModalAI Team @tom
              last edited by 21 Jun 2023, 19:58

              @tom Gotcha, thanks! I was trying to figure out how to do it straight from the get go instead of a patch, but this is probably fine.

              Did you end up throwing it in a service file? wondering if I should create a script to wait for a ping to succeed and then activate the dns

              T 1 Reply Last reply 21 Jun 2023, 20:05 Reply Quote 0
              • T
                tom admin @wilkinsaf
                last edited by 21 Jun 2023, 20:05

                @wilkinsaf Oh actually it does get called in the VOXL1 + quectel workflow it seems: https://gitlab.com/voxl-public/voxl-sdk/utilities/voxl-modem/-/blob/master/scripts/voxl-modem-start#L200

                but not the VOXL2 flow

                W 1 Reply Last reply 21 Jun 2023, 20:43 Reply Quote 0
                • W
                  wilkinsaf ModalAI Team @tom
                  last edited by 21 Jun 2023, 20:43

                  @tom here is a question...for voxl2 what should i set my modem to be if it is through quectel? Do i set it to "v2"?

                  T 1 Reply Last reply 21 Jun 2023, 20:50 Reply Quote 0
                  • T
                    tom admin @wilkinsaf
                    last edited by 21 Jun 2023, 20:50

                    @wilkinsaf It should be set to "quectel", you can use voxl-configure-modem to setup the config file

                    W 1 Reply Last reply 21 Jun 2023, 20:54 Reply Quote 0
                    • W
                      wilkinsaf ModalAI Team @tom
                      last edited by 21 Jun 2023, 20:54

                      @tom out of curiosity what is v2 for? is that the sierra wireless hat?

                      T 1 Reply Last reply 21 Jun 2023, 21:13 Reply Quote 0
                      • T
                        tom admin @wilkinsaf
                        last edited by 21 Jun 2023, 21:13

                        @wilkinsaf Yup, this guy: https://www.modalai.com/products/voxl-lte?variant=39300535681075

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