BIO_FAMILY_IPV4
case BIO_FAMILY_IPV4:
ret = BIO_FAMILY_IPV4;
case BIO_FAMILY_IPV4:
ret = BIO_FAMILY_IPV4;
|| !TEST_long_gt(BIO_set_conn_ip_family(cbio, BIO_FAMILY_IPV4), 0)
|| !TEST_true(BIO_set_accept_ip_family(abio, 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"