Cloudflare Gateway DNS-over-TLS Connectivity Issues over IPv4

Resolved

Minor impact

Started

Lasted 2h 22m

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Updates

  1. Resolved

    This incident has been resolved.

  2. Monitoring

    Our team has been able to identify and apply an effective fix for this issue. We are currently monitoring the results.

  3. Investigating

    Cloudflare is investigating an issue affecting Cloudflare Gateway DNS-over-TLS (DoT) connections over IPv4. Affected customers may experience connection timeouts and failed DNS resolution. This issue is limited to DoT over IPv4. DoT over IPv6, DNS-over-HTTPS (DoH), and standard DNS over UDP/TCP are not affected. We are working to identify the cause and restore connectivity. Further updates will be provided as more information becomes available.