MBEDTLS_SSL_DTLS_HELLO_VERIFY macro

\def MBEDTLS_SSL_DTLS_HELLO_VERIFY Enable support for HelloVerifyRequest on DTLS servers. This feature is highly recommended to prevent DTLS servers being used as amplifiers in DoS attacks against other hosts. It should always be enabled unless you know for sure amplification cannot be a problem in the environment in which your server operates. \warning Disabling this can be a security risk! (see above) Requires: MBEDTLS_SSL_PROTO_DTLS Comment this to disable support for HelloVerifyRequest.