Cloudflare: Cloudflare Gateway DNS-over-TLS Connectivity Issues over IPv4
Affected components: GatewayZero Trust - Gateway
Timeline of updates
- 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.
- monitoring
Our team has been able to identify and apply an effective fix for this issue. We are currently monitoring the results.
- resolved
This incident has been resolved.
Changes Rewindex caught on this incident
- Incident updated: Cloudflare Gateway DNS-over-TLS Connectivity Issues over IPv4
- Incident updated: Cloudflare Gateway DNS-over-TLS Connectivity Issues over IPv4
Archive proof
Rewindex commits each version of an incident it captures to a daily checkpoint, chains it to the day before, and has the checkpoint timestamped by FreeTSA and DigiCert. That proves these records existed by then and have not been changed since, by anyone, Rewindex included.
How the archive is checked, and what it cannot prove.
First version captured
In the 2026-11-02 checkpoint, timestamped by FreeTSA and DigiCert on . Record hash
d14f055079f83a3e…Version 2 captured
In the 2026-11-03 checkpoint, timestamped by FreeTSA and DigiCert on . Record hash
c2ec6ed0791d1fdb…Version 3 captured
In the 2026-11-03 checkpoint, timestamped by FreeTSA and DigiCert on . Record hash
6755b8ae9cc4c0c4…
Impact, status and times are the vendor’s own, as last archived. View on www.cloudflarestatus.com (opens in new tab).
Cite this
Status incident (vendor impact label: minor) posted by Cloudflare, started 2026-11-02 22:12 UTC, resolved after 2.4 h, 3 update(s); edited after publishing.
- Title
- Cloudflare Gateway DNS-over-TLS Connectivity Issues over IPv4
- Vendor
- Cloudflare
- Date
- URL
- https://rewindex.com/company/cloudflare/incidents/3bv9locsg7ln
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