DTLS_VERSION_LT
if (DTLS_VERSION_LT(clientvers, (unsigned int)ssl->method->version) && ssl->method->version != DTLS_ANY_VERSION) {
if (DTLS_VERSION_LT(nid, DTLS1_2_VERSION) && level > 0)
if (DTLS_VERSION_LT(s->client_version, DTLS1_2_VERSION)
&& DTLS_VERSION_LT(s->version, DTLS1_2_VERSION)))
return DTLS_VERSION_LT(versiona, versionb) ? -1 : 1;