# Cloudflare: Cloudflare Gateway DNS-over-TLS Connectivity Issues over IPv4

> Cloudflare Gateway DNS-over-TLS connections over IPv4 had connection timeouts and failed DNS resolution. DoT over IPv6, DNS-over-HTTPS, and standard DNS over UDP/TCP were not affected. Cloudflare identified and applied a fix, monitored the results, and resolved the incident. It lasted about 2 hours and 22 minutes.

- Provider: [Cloudflare](https://outages.cc/cloudflare.md)
- Type: Incident
- State: Resolved
- Worst impact: Degraded performance
- Started: 2026-11-02 22:12 UTC
- Resolved: 2026-11-03 00:34 UTC (lasted 2 h 22 min)
- Components: Gateway
- Official update: https://www.cloudflarestatus.com/incidents/3bv9locsg7ln

## Updates from Cloudflare

### resolved, 2026-11-03 00:34 UTC

This incident has been resolved.

### monitoring, 2026-11-03 00:24 UTC

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

### investigating, 2026-11-02 22:15 UTC

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.