[Changelog] Tunnel: UDP Performance & Reliability Improvements

Author: nikitacano

src/content/changelog/cloudflare-tunnel/2025-07-15-udp-improvements.mdx

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+---
+title: Faster, more reliable UDP traffic for Cloudflare Tunnel
+description: We've re-architected how Cloudflare Tunnel handles UDP traffic. Your real-time applications are now faster and more stable, especially on Tunnels with mixed TCP and UDP traffic.
+date: 2025-07-15
+---
+
+import { Render } from "~/components";
+
+Your real-time applications running over [Cloudflare Tunnel](/cloudflare-one/connections/connect-networks/) are now faster and more reliable. We've completely re-architected the way `cloudflared` proxies UDP traffic in order to isolate it from other traffic, ensuring latency-sensitive applications like private DNS are no longer slowed down by heavy TCP traffic (like file transfers) on the same Tunnel.
+
+This is a foundational improvement to Cloudflare Tunnel, delivered automatically to all customers. There are no settings to configure — your UDP traffic is already flowing faster and more reliably.
+
+**What’s new:**
+- **Faster UDP performance**: We've significantly reduced the latency for establishing new UDP sessions, making applications like private DNS much more responsive.
+- **Greater reliability for mixed traffic**: UDP packets are no longer affected by heavy TCP traffic, preventing timeouts and connection drops for your real-time services.
+
+Learn more about running [TCP or UDP applications](/reference-architecture/architectures/sase/#connecting-applications) and [private networks](/cloudflare-one/connections/connect-networks/private-net/) through [Cloudflare Tunnel](/cloudflare-one/connections/connect-networks/).