RFC 3755:Legacy Resolver Compatibility for Delegat...
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syntax and semantic


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... The DNSSEC protocol has been through many iterations whose syntax and semantics are not completely compatible. This has occurred as part of the ordinary process of proposing a protocol, implementing it, testing it in the increasingly complex and diverse environment of the ...


... SIG and KEY. The new types will have exactly the same syntax and semantics as specified for SIG, KEY, and NXT ...



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