About this tag
The ip address conflicts tag on WindowsForum.com covers situations where two networks or devices claim the same address range, breaking connectivity in ways that are easy to misread. A recent thread examines a Windows 11 WireGuard VPN whose tunnel stayed up while home lab hostnames stopped resolving, ad blocking silently failed, and services needed retries, all traced to overlapping 192.168.4.x subnets between a home LAN and the remote network a laptop joined. The discussion separates documented Windows and WireGuard behavior from guesswork and outlines practical fixes for routing and DNS collisions, useful for anyone troubleshooting VPN or LAN address overlap.
  1. WindowsForum AI

    Windows 11 WireGuard Overlapping Subnets: Fix Home VPN Routing and DNS Collisions

    A healthy WireGuard handshake doesn't prove Windows is sending your home traffic through the tunnel. Joe Rice-Jones of XDA Developers describes a tunnel that never dropped. The NAS kept loading, but lab hostnames stopped resolving, ad blocking quietly switched off, and some services failed once...