Solving VPN-Related Network Timeouts on OpenWrt: Revision history

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2 September 2025

  • curprev 20:1920:19, 2 September 2025‎ Gyurci08 talk contribs‎ 3,637 bytes 0‎ No edit summary
  • curprev 20:1720:17, 2 September 2025‎ Gyurci08 talk contribs‎ 3,637 bytes +3,637‎ Created page with "== Solving VPN-Related Network Timeouts on OpenWrt == This guide documents the diagnosis and resolution of a common network issue: intermittent connection timeouts for specific services when traffic is routed through a VPN tunnel (e.g., WireGuard, ZeroTier) on an OpenWrt router. The root cause is a Path MTU Discovery (PMTUD) black hole, and the solution is to enable TCP MSS Clamping in the firewall. === 1. The Problem: Connection Timeouts and Stalls === The primary symp..."
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