RFC 3755:Legacy Resolver Compatibility for Delegat...
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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 ...
... Delegation Signer's (DS) [RFC3658] introduction of new semantics for the NXT RR that are incompatible with the semantics ...
... semantics for the NXT RR that are incompatible with the semantics in [RFC2535]. Answers provided by DS ...
... Delegation Signer (DS) introduces new semantics for the NXT RR that are incompatible with the semantics ...
... semantics for the NXT RR that are incompatible with the semantics in RFC 2535(-> 4035prop | 4034prop | 4033prop). In RFC 2535(-> 4035prop | 4034prop | 4033prop), NXT ...


... quite possible that more incompatibilities exist between DS and earlier semantics. Legacy resolvers may also be confused by seeing records they recognize (SIG and KEY) while being unable to find NXTs. ...
... DNSSEC records with DS semantics is to have authoritative servers only send that data to DS-aware resolvers. It's been proposed that assigning a new ...
... DA bit unchanged, it would still see the new semantics, and it would probably fail to see unsecure delegations. Since it's impractical to ...


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



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