Troubleshoot network configuration

Last validated: Mar 16, 2026

The following topics provide suggestions and tips to help troubleshoot common network configuration issues.

Disable subnet route masquerading \ \ Disable Source Network Address Translation (SNAT) for a device in your Tailscale network. IP routes installed by Tailscale \ \ Determine which routes that Tailscale installs. Troubleshoot CGNAT conflicts \ \ Troubleshoot CGNAT conflicts in your Tailscale network. Troubleshoot DERP traffic routing issues \ \ Troubleshoot DERP traffic routing issues in your Tailscale network. Troubleshoot DNS errors for internal services \ \ Troubleshoot DNS errors for internal services connectivity in your Tailscale network. Troubleshoot hard NAT issues \ \ Troubleshoot hard NAT issues with slow or timed out connections in your Tailscale network. Troubleshoot IP forwarding issues when advertising subnet routes or exit nodes \ \ Troubleshoot IP forwarding issues when advertising subnet routes or exit nodes in your Tailscale network. Troubleshoot LAN traffic prioritization issues with overlapping subnet routes \ \ Troubleshoot LAN traffic prioritization issues with overlapping subnet routes in your Tailscale network. Troubleshoot multiple devices with the same 100.x IP address \ \ Troubleshoot multiple devices with the same 100.x IP address in your Tailscale network. Troubleshoot overlapping subnet route failover \ \ Troubleshoot overlapping subnet route failover issues in your Tailscale network. Troubleshoot routing all traffic through a default route \ \ Troubleshoot routing all traffic through a default route in your Tailscale network. Troubleshoot SoraCOM issues \ \ Troubleshoot SoraCOM issues in your Tailscale network. Troubleshoot Sunrise Communications issues \ \ Troubleshoot Sunrise Communications issues in your Tailscale network. Troubleshoot Tailscale domains and sites unreachable \ \ Troubleshoot Tailscale domains and sites unreachable issues in your Tailscale network. Troubleshoot Tally ERP issues \ \ Troubleshoot Tally ERP issues in your Tailscale network. Troubleshoot TCP connection issues between two devices \ \ Troubleshoot TCP connection issues between two devices in your Tailscale network. Unencrypted packet examination \ \ Inspect unencrypted packets as part of troubleshooting.

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