BIO_FAMILY_IPV4
case BIO_FAMILY_IPV4:
ret = BIO_FAMILY_IPV4;
case BIO_FAMILY_IPV4:
ret = BIO_FAMILY_IPV4;
ret = doit_localhost(s_ssl, c_ssl, BIO_FAMILY_IPV4,
acpt = BIO_new_accept(family == BIO_FAMILY_IPV4 ? "127.0.0.1:0"