20
DNS
20 BADNAME
Duplicate key name. The key name in a TKEY negotiation is already in use or conflicts with an existing key.
当您看到此代码时
A TKEY key establishment failed because a key with the same name already exists on the server from a previous session that was not properly cleaned up.
如何修复
Use a unique key name for each TKEY session (e.g., append a timestamp or random suffix). Delete stale keys on the server if they are no longer needed.
与之对比
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HTTP Request Lifecycle: From URL to Response
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DNSSEC Implementation Guide
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DNS-Based Failover and High Availability
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DNS over HTTPS (DoH) and DNS over TLS (DoT): Encrypted DNS Explained
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