Troubleshoot DNS errors for internal services
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Some DNS servers have a feature called DNS rebinding protection. This can prevent a particular type of security issue but can impact the ability to access your internal services, particularly those hosted behind a subnet router using private IP addresses. Some DNS servers might also apply this policy to the Tailscale IP address range (addresses defined in RFC6598).
This issue can affect home routers (for example, Google Wi-Fi), corporate DNS servers, and internet service provider (ISP) DNS servers.
For troubleshooting guidance, refer to DNS problems with internal services and DNS rebinding protection.