No connectivity when NextDNS is set as Tailscale DNS
Hello,
For the past hours, I've had a complete loss of connectivity when connected to Tailscale with NextDNS set as Global Nameserver + "Override local DNS" option.
There was no change of configuration on my part. DNS requests all time out.
Yet, if I set Tailscale's DNS to any of the other default providers -- Quad9 for example--, Tailscale works as expected, no loss of connectivity.
My Tailnet's ACL is in its default state.
I'm seeing this behaviour on Android and Linux devices over two different fibre connections and mobile networks, in two different cities, with different ISPs.
8 replies
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I can confirm that we have been suffering from the exact same issue starting around 9:30 am this morning.
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Can you please return the output of:
curl -v https://dns.nextdns.io
A https://nextdns.io/diag may also be useful.
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Do you still have the issue?
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No, it's working again.
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@NextDNS Could you please elaborate if you found any issues, and if so, did you fix something to resolve the issue?
We need an explanation and whether you have done something to ensure this issue will not happen again.
If not we will most likely use another service.said:
NextDNSStaff
NextDNs
yesterdayThu, 14 December 2023 at 00:39 CET
Reported - view
Do you still have the issue? -
I am experiencing a similar issue, but it is on a single device.
If I have NextDNS set up as my only DNS provider on Tailscale and I turn on 'Override local DNS,' my laptop cannot resolve DNS queries. It works again if I replace NextDNS with Cloudflare on any other DNS provider in Tailscale. Setting --accept-dns=false also solves the issue, but I cannot use Tailscale's Magic DNS feature anymore...
Regarding my setup, I am using a NixOS machine, and I have also configured NextDNS on my Unifi machine (the simple IPv4 with a DDNS entry for my home IP to be resolved).
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