# 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](/docs/reference/troubleshooting/network-configuration/disable-subnet-route-masquerading) — Disable Source Network Address Translation (SNAT) for a device in your Tailscale network.

* [IP routes installed by Tailscale](/docs/reference/troubleshooting/network-configuration/tailscale-ip-routes) — Determine which routes that Tailscale installs.

* [Troubleshoot CGNAT conflicts](/docs/reference/troubleshooting/network-configuration/cgnat-conflicts) — Troubleshoot CGNAT conflicts in your Tailscale network.

* [Troubleshoot DERP traffic routing issues](/docs/reference/troubleshooting/network-configuration/derp-routing) — Troubleshoot DERP traffic routing issues in your Tailscale network.

* [Troubleshoot DNS errors for internal services](/docs/reference/troubleshooting/network-configuration/dns-errors-internal-service) — Troubleshoot DNS errors for internal services connectivity in your Tailscale network.

* [Troubleshoot hard NAT issues](/docs/reference/troubleshooting/network-configuration/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](/docs/reference/troubleshooting/network-configuration/ip-forwarding-errors-advertise) — Troubleshoot IP forwarding issues when advertising subnet routes or exit nodes in your Tailscale network.

* [Troubleshoot LAN traffic prioritization issues with overlapping subnet routes](/docs/reference/troubleshooting/network-configuration/lan-traffic-overlapping-subnets) — Troubleshoot LAN traffic prioritization issues with overlapping subnet routes in your Tailscale network.

* [Troubleshoot multiple devices with the same 100.x IP address](/docs/reference/troubleshooting/network-configuration/multiple-devices-same-100.x-ip-address) — Troubleshoot multiple devices with the same 100.x IP address in your Tailscale network.

* [Troubleshoot overlapping subnet route failover](/docs/reference/troubleshooting/network-configuration/overlapping-subnet-route-failover) — Troubleshoot overlapping subnet route failover issues in your Tailscale network.

* [Troubleshoot routing all traffic through a default route](/docs/reference/troubleshooting/network-configuration/route-traffic-default-node) — Troubleshoot routing all traffic through a default route in your Tailscale network.

* [Troubleshoot SoraCOM issues](/docs/reference/troubleshooting/network-configuration/soracom-issues) — Troubleshoot SoraCOM issues in your Tailscale network.

* [Troubleshoot Sunrise Communications issues](/docs/reference/troubleshooting/network-configuration/sunrise-communications-issues) — Troubleshoot Sunrise Communications issues in your Tailscale network.

* [Troubleshoot Tailscale domains and sites unreachable](/docs/reference/troubleshooting/network-configuration/tailscale-domains-sites-unreachable) — Troubleshoot Tailscale domains and sites unreachable issues in your Tailscale network.

* [Troubleshoot Tally ERP issues](/docs/reference/troubleshooting/network-configuration/tally-erp-issues) — Troubleshoot Tally ERP issues in your Tailscale network.

* [Troubleshoot TCP connection issues between two devices](/docs/reference/troubleshooting/network-configuration/tcp-connection-two-devices) — Troubleshoot TCP connection issues between two devices in your Tailscale network.

* [Unencrypted packet examination](/docs/reference/troubleshooting/network-configuration/inspect-unencrypted-packets) — Inspect unencrypted packets as part of troubleshooting.