RFC 3755:Legacy Resolver Compatibility for Delegat...
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resource record


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... use, per [RFC3445]. RRSIG (Resource Record SIGnature) will replace SIG ...
... RRSIG with a type-covered field of zero has undefined semantics. The meaning of such a resource record may only be defined by IETF Standards Action. ...


... DNS Resource Record Types ...
... This document updates the IANA registry for DNS Resource Record Types by assigning types 46, 47, and 48 to the RRSIG, NSEC ...
... Like the KEY resource record, DNSKEY contains a 16-bit flags field ...
... Like the KEY resource record, DNSKEY contains an eight bit protocol field ...


... Gudmundsson, O., "Delegation Signer (DS) Resource Record (RR)", RFC 3658(-> 4035prop | 4034prop | 4033prop), December 2003. ...
... Massey, D., and S. Rose, "Limiting the Scope of the KEY Resource Record (RR)", RFC 3445(-> 4035prop | 4034prop | 4033prop), December 2002. ...
... Gustafsson, A., "Handling of Unknown DNS Resource Record (RR) Types", RFC 3597prop, September 2003. ...



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