SSL_clear_options
uint64_t SSL_clear_options(SSL *s, uint64_t op);
SSL_clear_options(ctx.qc->tls, hs_mask_value);
SSL_clear_options(qtls->args.s, SSL_OP_ENABLE_MIDDLEBOX_COMPAT);
SSL_clear_options(s, 0xFFFFFFFFL);
SSL_clear_options(s, 0xFFFFFFFFL);
SSL_clear_options(ssl, UINT64_MAX);