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3.1.2. DTLS Protocol Versions

DTLS, an adaptation of TLS for UDP datagrams, was introduced when TLS 1.1 was published. The following are the recommendations with respect to DTLS:

  • Implementations SHOULD NOT negotiate DTLS version 1.0 [RFC4347].

    Version 1.0 of DTLS correlates to version 1.1 of TLS (see above).

  • Implementations MUST support and MUST prefer to negotiate DTLS version 1.2 [RFC6347].

    Version 1.2 of DTLS correlates to version 1.2 of TLS (see above). (There is no version 1.1 of DTLS.)

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