\def MBEDTLS_SSL_DTLS_CONNECTION_ID_COMPAT Defines whether RFC 9146 (default) or the legacy version (version draft-ietf-tls-dtls-connection-id-05, https://tools.ietf.org/html/draft-ietf-tls-dtls-connection-id-05) is used. Set the value to 0 for the standard version, and 1 for the legacy draft version. \deprecated Support for the legacy version of the DTLS Connection ID feature is deprecated. Please switch to the standardized version defined in RFC 9146 enabled by utilizing MBEDTLS_SSL_DTLS_CONNECTION_ID without use of MBEDTLS_SSL_DTLS_CONNECTION_ID_COMPAT. Requires: MBEDTLS_SSL_DTLS_CONNECTION_ID